Invalid response from the server, please try again

Hello,
i am having some issues with connecting some child sites with my MainWP dashboard. They were connected but somehow they are not connected anymore and i am unable to reconnect the child site. But i am still able to go to the wordpress backend of the child site through the Mainwp dashboard.

when i press “Test connection” in the dashboard settings of the child site i get this error:

these are the server settings of the child site:


### Serverconfiguratie             Vereiste waarde                                        Waarde                                       Status   ###

MAINWP CHILD                       
                                   MainWP Child Version                                   4.5                                          4.5         Pass        
WordPress                          
                                   WordPress Version                                      >=3.4                                        6.3         Pass        
                                   WordPress Memory Limit                                 >=64M                                        40M         Warning     
                                   MultiSite Disabled                                     =true                                        true        Pass        
                                   Bestand systeem methode                                = direct                                     direct      Pass        
PHP-INSTELLINGEN                   
                                   PHP Version                                            >=7.4                                        7.4.33      Pass        
                                   PHP veilige modus uitgeschakeld                        UIT                                          
                                   PHP Max Execution Time                                 >=30 seconds                                 300         Pass        
                                   PHP Max Input Time                                     >=30 seconds                                 300         Pass        
                                   PHP Memory Limit                                       >=128M (256M+ best for big backups)          256M        Pass        
                                   PCRE Backtracking Limit                                >=10000                                      1000000     Pass        
                                   PHP Upload Max Filesize                                >=2M (2MB+ best for upload of big plugins)   64M         Pass        
                                   PHP Post Max Size                                      >=2M (2MB+ best for upload of big plugins)   64M         Pass        
                                   SSL Extension Enabled                                  =true                                        true        Pass        
                                   SSL Warnings                                           = empty                                                  Pass        
                                   cURL Extension Enabled                                 =true                                        true        Pass        
                                   cURL Timeout                                           >=300 seconds                                60          Warning     
                                   cURL Version                                           >=7.18.1                                     7.84.0      Pass        
                                   cURL SSL Version                                       >=OpenSSL/1.1.0                              OpenSSL/1.1.1dPass        
                                   OpenSSL Working Status                                 Yes                                          Yes         Pass        
MySQL-INSTELLINGEN                 
                                   MySQL Version                                          >=5.0                                        10.5.16-MariaDB-cll-lvePass        
BACK-UP ARCHIEF INFORMATIE         
                                   ZipArchive enabled in PHP                              =true                                        true        Pass        
                                   Tar GZip supported                                     =true                                        true        Pass        
                                   Tar BZip2 supported                                    =true                                        true        Pass        
SERVERINFORMATIE                   
                                   WordPress root folder                                  /home/marteip447/domains/praktijk-advance.nl/public_html/
                                   Server naam                                            www.praktijk-advance.nl                      
                                   Server software                                        Apache/2                                     
                                   Besturingssysteem                                      Linux                                        
                                   Architectuur                                           64 bit                                       
                                   Server-IP                                              62.221.252.144                               
                                   Server protocol                                        HTTP/2.0                                     
                                   HTTP host                                              www.praktijk-advance.nl                      
                                   HTTPS                                                  AAN - on                                     
                                   Server maakt zelf verbinding                           Onverwachte HTTP reactie body:               
                                   Useragent                                              Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36
                                   Server poort                                           443                                          
                                   Gateway interface                                                                                   
                                   Geheugengebruik                                        77.24 MB                                     
                                   Complete URL                                           https://www.praktijk-advance.nl/wp-admin/plugins.php
                                   Aanvraag tijd                                          1692353649                                   
                                   Inhoud accepteren                                      text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
                                   Accept Charset inhoud                                  N/B                                          
                                   Script dat momenteel wordt uitgevoerd padnaam          /home/marteip447/domains/praktijk-advance.nl/private_html/wp-admin/options-general.php
                                   Huidige pagina URI                                     /wp-admin/options-general.php?page=mainwp_child_tab
                                   Adres op afstand                                       85.147.94.125                                
                                   Remote host                                            N/A                                          
                                   Remote poort                                           49062                                        
PHP-INFORMATIE                     
                                   PHP Allow URL fopen                                    AAN                                          
                                   PHP Exif ondersteuning                                 JA ( V7.4.)                                  
                                   PHP IPTC ondersteuning                                 JA                                           
                                   PHP XML ondersteuning                                  JA                                           
                                   PHP uitgeschakelde functies                            Geen functies uitgeschakeld                  
                                   PHP geladen extensies                                  Core, PDO, Phar, Reflection, SPL, SimpleXML, bcmath, bz2, calendar, ctype, curl, date, dom, exif, fileinfo, filter, ftp, gd, gettext, gmp, hash, iconv, imap, intl, ionCube Loader, json, libxml, litespeed, mbstring, mysqli, mysqlnd, openssl, pcntl, pcre, pdo_mysql, pdo_sqlite, posix, readline, session, shmop, soap, sockets, sqlite3, standard, tokenizer, xml, xmlreader, xmlwriter, xsl, zip, zlib
MySQL INFORMATIE                   
                                   MySQL modus                                            ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
                                   MySQL client codering                                  utf8mb4                                      
WordPress PLUGINS                  
                                   MainWP Child                                           4.5                                          Actief                  
                                   WooCommerce                                            8.0.2                                        Actief                  

### Volgende vervalling            Schema                                                 Hook                                      ###

18/08/2023 12:15                   Elke minuut                                            action_scheduler_run_queue                   
18/08/2023 12:59                   Eenmaal per uur                                        jetpack_clean_nonces                         
18/08/2023 12:59                   Eenmaal per dag                                        woocommerce_cleanup_logs                     
18/08/2023 12:59                   Eenmaal per dag                                        woocommerce_cleanup_rate_limits              
18/08/2023 13:01                                                                          woocommerce_cancel_unpaid_orders             
18/08/2023 13:05                   Eenmaal per uur                                        wc_admin_process_orders_milestone            
18/08/2023 13:05                   Eenmaal per uur                                        wc_admin_unsnooze_admin_notes                
18/08/2023 13:08                   Eenmaal per uur                                        wp_privacy_delete_old_export_files           
18/08/2023 13:19                   Eenmaal per dag                                        wc_admin_daily                               
18/08/2023 13:21                   Tweemaal per dag                                       wp_https_detection                           
18/08/2023 14:01                   Tweemaal per dag                                       wp_update_user_counts                        
18/08/2023 15:59                   Tweemaal per dag                                       woocommerce_cleanup_sessions                 
18/08/2023 23:08                   Tweemaal per dag                                       wp_version_check                             
18/08/2023 23:08                   Tweemaal per dag                                       wp_update_plugins                            
18/08/2023 23:08                   Tweemaal per dag                                       wp_update_themes                             
19/08/2023 00:00                   Eenmaal per dag                                        woocommerce_scheduled_sales                  
19/08/2023 09:59                   Eenmaal per dag                                        jetpack_v2_heartbeat                         
19/08/2023 09:59                   Eenmaal per dag                                        woocommerce_cleanup_personal_data            
19/08/2023 09:59                   Eenmaal per dag                                        woocommerce_tracker_send_event               
19/08/2023 11:08                   Eenmaal per dag                                        recovery_mode_clean_expired_keys             
19/08/2023 11:31                   Eenmaal per dag                                        add_second_notice                            
19/08/2023 11:59                   Eenmaal per dag                                        wp_scheduled_delete                          
19/08/2023 11:59                   Eenmaal per dag                                        delete_expired_transients                    
19/08/2023 11:59                   Eenmaal per dag                                        wp_scheduled_auto_draft_delete               
25/08/2023 09:57                   Eens per week                                          wp_delete_temp_updater_backups               
25/08/2023 11:08                   Eens per week                                          wp_site_health_scheduled_check               
28/08/2023 11:12                   Maandelijks                                            delete_fonts_folder                          
02/09/2023 10:00                   Iedere 15 dagen                                        woocommerce_geoip_updater                    

### Tijd                           Fout                                                ###

Fouten registratie uitgeschakeld.  
MainWP is unable to find your error logs, please contact your host for server error logs.

This also sounds like the topic I reported earlier: Lots of disconnected sites after update of MainWP 4.5.0.1

Hi @JesseDehaanMedia

Welcome to the MainWP community.

Is your Dashboard running the latest 4.5.0.1 version?

Can you try deactivating and reactivating the MainWP Child plugin on one of the affected sites, and see if they can be reconnected after that?

I already tried that multiple times without any effect. I also tried to remove the child site from the dashboard an add it again but that also doesn’t work

Thanks for trying that.

Can you please post the community system report from your MainWP Dashboard for review? The report is located in your Dashboard under Info → Server, on the top right of the page.

Be sure to use the button like the one below; this button hides all your private information:

image

Pressing the button auto-copies the report to your clipboard then just paste it in a reply here.

here is the system report


### WordPress Check                Required                                               Detected                                     Status   ###

FileSystem Method                  = direct                                               direct                                       Pass        
MultiSite Disabled                 =true                                                  true                                         Pass        
WordPress Memory Limit             >=64M                                                  40M                                          Warning     
WordPress Version                  >=3.6                                                  6.3                                          Pass        

### PHP                            Required                                               Detected                                     Status   ###

cURL Extension Enabled             =true                                                  true                                         Pass        
cURL Timeout                       >=300 seconds                                          60                                           Warning     
cURL Version                       >=7.18.1                                               7.84.0                                       Pass        
OpenSSL Version                    >=OpenSSL/1.1.0                                        OpenSSL/1.1.1p                               Pass        
OpenSSL Working Status             Yes                                                    Yes                                          Pass        
PCRE Backtracking Limit            >=10000                                                1000000                                      Pass        
PHP Allow URL fopen                N/A                                                    YES                                                      
PHP Disabled Functions             N/A                                                    No functions disabled.                                   
PHP Exif Support                   N/A                                                    YES                                                      
PHP IPTC Support                   N/A                                                    YES                                                      
PHP Loaded Extensions              N/A                                                    Core, PDO, Phar, Reflection, SPL, SimpleXML, bcmath, bz2, calendar, ctype, curl, date, dom, exif, fileinfo, filter, ftp, gd, gettext, gmp, hash, iconv, intl, json, libxml, litespeed, mbstring, mysqli, mysqlnd, openssl, pcntl, pcre, pdo_mysql, pdo_sqlite, posix, readline, session, shmop, soap, sockets, sodium, sqlite3, standard, tokenizer, xml, xmlreader, xmlwriter, xsl, zip, zlib            
PHP Max Execution Time             >=30 seconds                                           120                                          Pass        
PHP Max Input Time                 >=30 seconds                                           -1                                           Pass        
PHP Memory Limit                   >=128M                                                 2048M                                        Pass        
PHP Post Max Size                  >=2M                                                   8M                                           Pass        
PHP Safe Mode Disabled             =true                                                  true                                         Pass        
PHP Upload Max Filesize            >=2M                                                   2M                                           Pass        
PHP Version                        >=7.4                                                  7.4.33                                       Pass        
PHP XML Support                    N/A                                                    YES                                                      
SSL Extension Enabled              =true                                                  true                                         Pass        
SSL Warnings                       = empty                                                                                             Pass        

### MySQL                          Required                                               Detected                                     Status   ###

MySQL Client Encoding              N/A                                                    utf8                                                     
MySQL Mode                         N/A                                                    NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION               
MySQL Version                      >=5.0                                                  10.4.27-MariaDB-cll-lve                      Pass        

### Server Configuration           Detected Value                                      ###

Accept Content                     text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
Accept-Charset Content             N/A                                                    
Architecture                       64		 bit                                               
Gateway Interface                                                                         
HTTPS                              ON                                                     
Memory Usage                       58.64 MB                                               
Operating System                   Linux                                                  
Request Time                       1692365648                                             
Server Protocol                    HTTP/1.1                                               
Server self connect                Not expected HTTP response body:                       
Server Software                    Apache/2                                               
User Agent                         Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36

### MainWP Dashboard Settings      Detected Value                                      ###

Abandoned plugins/themes tolerance 365                                                    
Basic uptime monitoring enabled    Yes                                                    
MainWP Dashboard Version           Latest: 4.5.0.1 | Detected: 4.5.0.1 Pass               
MainWP legacy backups enabled      No                                                     
Maximum number of pages to return                                                         
Maximum number of posts to return                                                         
Maximum simultaneous install and update requests3                                                      
Maximum simultaneous requests      4                                                      
Maximum simultaneous requests per ip1                                                      
Maximum simultaneous sync requests 8                                                      
Minimum delay between requests     200                                                    
Minimum delay between requests to the same ip1000                                                   
Number of child sites              119                                                    
Optimize for shared hosting or big networksYes                                                    
Plugin advanced automatic updates enabledYes                                                    
Primary backup system              MainWP Legacy Backups                                  
REST API enabled                   No                                                     
Site health monitoring enabled     Yes                                                    
Theme advanced automatic updates enabledYes                                                    
Use WP Cron                        Yes                                                    
WP Core advanced automatic updates enabledYes                                                    

### Extensions                     Version                                                License                                      Status   ###

Advanced Uptime Monitor Extension  5.2.3                                                  Actived                                      Pass        
Dashboard Lock                     4.0.2                                                  Actived                                      Pass        
MainWP BackWPup Extension          4.0.6                                                  Actived                                      Pass        
MainWP Custom Dashboard Extension  4.1.2                                                  Actived                                      Pass        
MainWP Pro Reports Extension       4.1.1                                                  Actived                                      Pass        
MainWP Sucuri Extension            4.0.14                                                 Actived                                      Pass        
MainWP Time Capsule Extension      4.0.4                                                  Actived                                      Pass        
MainWP Wordfence Extension         4.0.9                                                  Actived                                      Pass        

### Plugin                         Version                                                Status                                    ###

All In One WP Security             5.2.2                                                  Active                                       
MainWP Dashboard                   4.5.0.1                                                Active                                       
Optimize Header (DHM)              1.0                                                    Active                                       
Optimize Security (DHM)            1.0                                                    Inactive                                     
UpdraftPlus - Backup/Restore       1.23.7                                                 Active                                       

i also update the dashboard version to 4.5.0.1 but that didn’t work either.

Thanks for trying that.

Would you mind opening a private Help Desk ticket so we can collect some additional information & investigate further?

And please refer to this Managers thread by its URL in the ticket.

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