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Bad request 400

programmertehamatech
I would say it's time to make a ticket on this so we can take a look directly.

Good evening I have a problem with WordPress It is Bad Request Your browser sent a request that this server could not understand. Additionally, a 400 Bad Request error was encountered while trying to use an ErrorDocument to handle the request. Occurs when downloading a plugin or template Note that I own a VPS server and I do not know where the error came from

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9 comments

Date Votes
  • cPRex Jurassic Moderator
    Hey there! The first area to check for these types of issues is the server's Apache log at /etc/apache2/logs/error_log. If you watch that file while reproducing the error in the browser, I would expect more information to appear in the log.
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  • programmertehamatech
    Hey there! The first area to check for these types of issues is the server's Apache log at /etc/apache2/logs/error_log. If you watch that file while reproducing the error in the browser, I would expect more information to appear in the log.

    [Thu Sep 28 08:13:05.259042 2023] [core:warn] [pid 467418] (101)Network is unreachable: AH00056: connect to listene> The most frequent error in the file
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  • programmertehamatech
    Hey there! The first area to check for these types of issues is the server's Apache log at /etc/apache2/logs/error_log. If you watch that file while reproducing the error in the browser, I would expect more information to appear in the log.

    There are a lot of records [Thu Sep 28 10:01:43.791727 2023] [authz_core:error] [pid 502211] [client 40.77.167.136:0] AH01630: client denied b> [Thu Sep 28 10:22:24.114249 2023] [security2:error] [pid 506196] [client 31.31.183.7:0] [client 31.31.183.7] ModSec> [Thu Sep 28 10:22:24.114851 2023] [security2:error] [pid 506196] [client 31.31.183.7:0] [client 31.31.183.7] ModSec> [Thu Sep 28 10:22:24.114876 2023] [proxy:error] [pid 506196] (20014)Internal error (specific information not available> [Thu Sep 28 10:22:24.115200 2023] [security2:error] [pid 506196] [client 31.31.183.7:0] [client 31.31.183.7] ModSec> [Thu Sep 28 10:22:24.115249 2023] [proxy_fcgi:error] [pid 506196] (20014)Internal error (specific information not a> [Thu Sep 28 10:22:24.121905 2023] [security2:error] [pid 506196] [client 31.31.183.7:0] [client 31.31.183.7] ModSec> [Thu Sep 28 10:22:24.122208 2023] [security2:error] [pid 506196] [client 31.31.183.7:0] [client 31.31.183.7] ModSec> I did not understand exactly where my mistake was
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  • cPRex Jurassic Moderator
    I would recommend running this command: tail -f /etc/apache2/logs/error_log
    and then reproducing the issue in a browser. That will let the log scroll in real-time while the issue happens. I would focus on the mod_security entries in the log as those would be most likely to be related to the issue.
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  • programmertehamatech
    I would recommend running this command: tail -f /etc/apache2/logs/error_log
    and then reproducing the issue in a browser. That will let the log scroll in real-time while the issue happens. I would focus on the mod_security entries in the log as those would be most likely to be related to the issue.

    This is the error that appears [Sun Oct 01 09:52:29.488234 2023] [security2:error] [pid 797797] [client 89.189.65.39:0] [client 89.189.65.39] ModSecurity: Multipart parsing error: Multipart: Failed to create file: /var/imunify360/tmp_modsec/20231001-095229-ZRkXLZ45T0QLYozdp5aRxQAAAAc-file-fT62IS [hostname "host.name.com"> [uri "/wp-admin/update.php"> [unique_id "ZRkXLZ45T0QLYozdp5aRxQAAAAc">, referer: Log In " kia " WordPress [Sun Oct 01 09:52:29.489007 2023] [security2:error] [pid 797797] [client 89.189.65.39:0] [client 89.189.65.39] ModSecurity: Failed to open temporary file for reading: /var/imunify360/tmp_modsec/20231001-095229-ZRkXLZ45T0QLYozdp5aRxQAAAAc-request_body-7zpInQ [hostname "host.name.com"> [uri "/wp-admin/update.php"> [unique_id "ZRkXLZ45T0QLYozdp5aRxQAAAAc">, referer: Log In " kia " WordPress [Sun Oct 01 09:52:29.489035 2023] [proxy:error] [pid 797797] (20014)Internal error (specific information not available): [client 89.189.65.39:0] AH01095: prefetch request body failed to 0.0.0.0:0 (httpd-UDS) from 194.163.150.133 (), referer: Log In " kia " WordPress [Sun Oct 01 09:52:29.489624 2023] [security2:error] [pid 797797] [client 89.189.65.39:0] [client 89.189.65.39] ModSecurity: Input filter: Error reading from temporary file: Bad file descriptor [hostname "host.name.com"> [uri "/index.php"> [unique_id "ZRkXLZ45T0QLYozdp5aRxQAAAAc">, referer: Log In " kia " WordPress [Sun Oct 01 09:52:29.489662 2023] [proxy_fcgi:error] [pid 797797] (20014)Internal error (specific information not available): [client 89.189.65.39:0] AH01075: Error dispatching request to : (reading input brigade), referer: Log In " kia " WordPress [Sun Oct 01 09:52:29.492661 2023] [security2:error] [pid 797797] [client 89.189.65.39:0] [client 89.189.65.39] ModSecurity: Audit log: Failed to open temporary file for reading: /var/imunify360/tmp_modsec/20231001-095229-ZRkXLZ45T0QLYozdp5aRxQAAAAc-request_body-7zpInQ [hostname "host.name.com"> [uri "/wp-admin/update.php"> [unique_id "ZRkXLZ45T0QLYozdp5aRxQAAAAc">, referer: Log In " kia " WordPress [Sun Oct 01 09:52:29.493171 2023] [security2:error] [pid 797797] [client 89.189.65.39:0] [client 89.189.65.39] ModSecurity: Input filter: Failed to delete temporary file: /var/imunify360/tmp_modsec/20231001-095229-ZRkXLZ45T0QLYozdp5aRxQAAAAc-request_body-7zpInQ [hostname "host.name.com"> [uri "/wp-admin/update.php"> [unique_id "ZRkXLZ45T0QLYozdp5aRxQAAAAc">, referer: Log In " kia " WordPress
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  • cPRex Jurassic Moderator
    Thanks for that information. When this happens, that usually means that you need to add write permissions to the /var/imunify360/tmp_modsec/ directory. Can you adjust the permissions on that directory and see if that resolves the issue?
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  • programmertehamatech
    ModSecurityThe problem has been solved and you have stopped
    Thanks for that information. When this happens, that usually means that you need to add write permissions to the /var/imunify360/tmp_modsec/ directory. Can you adjust the permissions on that directory and see if that resolves the issue?

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  • programmertehamatech
    I would like to ask another question How to change the IP of an account
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  • cPRex Jurassic Moderator
    @programmertehamatech - it's best to keep threads limited to just one question, but you can do this through WHM >> Change Site's IP Address
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