500 Internal Server Error

  • Resolved rkwon

    (@rkwon)


    6 years, 2 months ago

    When attempting to log in to my page, I encountered a 500: Internal Server Error.

    I have tried disabling all plugins and renaming .htaccess.

    When I look at my host’s error log, I see multiple iterations of this (just with different timestamps):
    20131019T110727: seareg.org/index.php
    PHP Warning: Unknown: open(/var/php_sessions/sess_085ab28508e83370d4d1b01229f59150, O_RDWR) failed: No such file or directory (2) in Unknown on line 0
    PHP Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0

    I checked index.php and could not find any such call, unless it is somewhere in @var bool.

    My theme is Twenty-Twelve (the same one it has been since the site was created). All plugins were updated the last time I was able to log in; I had deferred updating the WordPress version since I was mainly focused on updating content at the time.

    According to my host, I am running PHP 7.3. The site was built several versions of PHP ago.

    The closest I found on the forum was here: https://wordpress.org/support/topic/php-warning-failed-to-write-session-data/, but the respondent indicated it was connected to a plugin.

    However, disabling all plugins (https://www.wpbeginner.com/plugins/how-to-deactivate-all-plugins-when-not-able-to-access-wp-admin/) did not fix the problem. I still received the 500 Internal Server Error when I tried to access the login page (seareg.org/wp-admin).

    I am fairly new to this level of error in WordPress. Help, please.

    The page I need help with: [log in to see the link]

Viewing 15 replies - 1 through 15 (of 16 total)
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  • Moderator t-p

    (@t-p)

    6 years, 2 months ago

    What did you do before this error occurred?

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    Thank you – I am fairly certain that I updated a couple of plugins (though I cannot recall exactly which ones) and then edited the content of some pages.

    Moderator t-p

    (@t-p)

    6 years, 2 months ago

    Try this one more time: Try manually resetting your plugins (no Dashboard access required). If that resolves the issue, reactivate each one individually until you find the cause.

    If that does not resolve the issue, access your server via SFTP or FTP, or a file manager in your hosting account’s control panel, navigate to /wp-content/themes/ and rename the directory of your currently active theme. This will force the default theme to activate and hopefully rule-out a theme-specific issue (theme functions can interfere like plugins).

    Make sure to clear all types of cache before viewing the page.

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    I will give it a try, thanks.

    Looking through my file manager, I can see that I updated three themes (twentytwenty, twentytwelve, and twentynineteen) a couple days (4/2) before the site broke (4/5).

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    I manually reset the plugins using phpMyAdmin; the error persists.

    I renamed the directory of my currently active theme (twentytwelve) via my host’s FileManager; this also did not solve the problem. I tried logging in on a completely clean browser on different devices.

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    I also just attempted to manually change the theme via phpMyAdmin; that does not seem to have worked, either.

    Moderator t-p

    (@t-p)

    6 years, 2 months ago

    Please check server error logs for any clue. If you need help locating them, please contact your hosting provider.

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    The server error logs are all variations of the following:

    
20131019T110727: seareg.org/index.php 
PHP Warning:  Unknown: open(/var/php_sessions/sess_085ab28508e83370d4d1b01229f59150, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 
PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0 
 
20131019T112730: seareg.org/wp-cron.php 
PHP Warning:  Unknown: open(/var/php_sessions/sess_b599b09371845a582f4be0c600dd9b28, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 
PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0 
 
20131019T112730: aus.vas.ind.seareg.org/index.php 
PHP Warning:  Unknown: open(/var/php_sessions/sess_06bb6f7a21379fc05fd0892e1f1910c7, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 
PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0 

20131020T152614: seareg.org/index.php 
PHP Warning:  Unknown: open(/var/php_sessions/sess_b8ab47d01a4e0ccdea5610b00f16c23c, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 
PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0 

20131020T153227: seareg.org/wp-login.php 
PHP Warning:  Unknown: open(/var/php_sessions/sess_1673cb71a1046d7975601d002d15fe27, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 
PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0 
.
.
.
20131020T153248: seareg.org/wp-login.php 
PHP Warning:  Unknown: open(/var/php_sessions/sess_1673cb71a1046d7975601d002d15fe27, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 
PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0 
 
20131020T171937: seareg.org/index.php 
PHP Warning:  Unknown: open(/var/php_sessions/sess_37ad09e09678cc9e59ffa67328069107, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 
PHP Warning:  Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/php_sessions) in Unknown on line 0

    The only thing that seems to change is the timestamp and the particular attempted session tag. “aus.vas.ind.seareg.org/index.php” is also new, though.

    • This reply was modified 6 years, 2 months ago by rkwon.
    • This reply was modified 6 years, 2 months ago by Yui. Reason: email deleted
    • This reply was modified 6 years, 2 months ago by Yui. Reason: wrong reason for editing, i meant, use CODE for proper formatting
    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    Also, if it helps, here are details from the access log just before and after the 500 error appeared:

    
54.36.150.39 - - [04/Apr/2020:22:40:15 -0400] "GET /comments/feed/ HTTP/1.1" 200 4947 "-" "Mozilla/5.0 (compatible; AhrefsBot/6.1; +http://ahrefs.com/robot/)"

xxx.xxx.xxx.xxx - - [04/Apr/2020:22:40:39 -0400] "POST /wp-admin/admin-ajax.php HTTP/1.1" 200 47 "https://seareg.org/wp-admin/edit.php?s&post_status=all&post_type=nf_sub&action=-1&form_id=28&nf_form_filter&begin_date&end_date&paged=1&action2=-1" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:74.0) Gecko/20100101 Firefox/74.0"

xx.xxx.xxx.xxx - - [04/Apr/2020:22:42:39 -0400] "POST /wp-cron.php?doing_wp_cron=1586054559.9006350040435791015625 HTTP/1.1" 200 - "https://seareg.org/wp-cron.php?doing_wp_cron=1586054559.9006350040435791015625" "WordPress/5.3.2; https://seareg.org"

xxx.xxx.xxx.xxx - - [04/Apr/2020:22:42:39 -0400] "POST /wp-admin/admin-ajax.php HTTP/1.1" 200 47 "https://seareg.org/wp-admin/edit.php?s&post_status=all&post_type=nf_sub&action=-1&form_id=28&nf_form_filter&begin_date&end_date&paged=1&action2=-1" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:74.0) Gecko/20100101 Firefox/74.0"

xxx.x.xxx.xxx - - [04/Apr/2020:22:44:25 -0400] "HEAD / HTTP/1.1" 500 - "-" "jetmon/1.0 (Jetpack Site Uptime Monitor by WordPress.com)"

xxx.xxx.xxx.xxx - - [04/Apr/2020:22:44:39 -0400] "POST /wp-admin/admin-ajax.php HTTP/1.1" 200 47 "https://seareg.org/wp-admin/edit.php?s&post_status=all&post_type=nf_sub&action=-1&form_id=28&nf_form_filter&begin_date&end_date&paged=1&action2=-1" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:74.0) Gecko/20100101 Firefox/74.0"

xx.xxx.xxx.xxx - - [04/Apr/2020:22:44:40 -0400] "POST /wp-cron.php?doing_wp_cron=1586054679.9844279289245605468750 HTTP/1.1" 200 - "https://seareg.org/wp-cron.php?doing_wp_cron=1586054679.9844279289245605468750" "WordPress/5.3.2; https://seareg.org"

xxx.xxx.xxx.xxx - - [04/Apr/2020:22:46:39 -0400] "POST /wp-admin/admin-ajax.php HTTP/1.1" 500 519 "https://seareg.org/wp-admin/edit.php?s&post_status=all&post_type=nf_sub&action=-1&form_id=28&nf_form_filter&begin_date&end_date&paged=1&action2=-1" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:74.0) Gecko/20100101 Firefox/74.0"

xxx.xxx.xxx.xxx - - [04/Apr/2020:22:48:39 -0400] "POST /wp-admin/admin-ajax.php HTTP/1.1" 500 519 "https://seareg.org/wp-admin/edit.php?s&post_status=all&post_type=nf_sub&action=-1&form_id=28&nf_form_filter&begin_date&end_date&paged=1&action2=-1" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:74.0) Gecko/20100101 Firefox/74.0"
    • This reply was modified 6 years, 2 months ago by Yui.
    • This reply was modified 6 years, 2 months ago by Yui. Reason: please use CODE button for proper formatting
    robvas

    (@robvas)

    6 years, 2 months ago

    What are the permissions of the directories that you are getting errors writing to?

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    @robvas – I am sorry, but I am not sure what you mean.

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    If it helps at all, I still receive a 500 internal server error when I attempt to read phpinfo().

    Moderator t-p

    (@t-p)

    6 years, 2 months ago

    If previous troubleshooting steps do not resolve the issue, it’s possible that a .htaccess rule could be the source of the problem. To check for this, access your server via SFTP or FTP, or a file manager in your hosting account’s control panel, and rename the .htaccess file. If you can’t find a .htaccess file, make sure that you have set your SFTP or FTP client to view invisible files.

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    @t-p – thank you; I have already tried renaming the .htaccess file (including just now) and it did not resolve the issue.

    The error persists whether I have no .htaccess file, a blank .htaccess file, a core/stock WordPress .htaccess file, or my .htaccess file that has been altered/hardened by BPSecurity.

    If it helps at all, I also receive a 500 internal server error when I attempt to read phpinfo().

    Thread Starter rkwon

    (@rkwon)

    6 years, 2 months ago

    In case anyone else runs across this issue, it turned out that my host had, on their end, installed “new devices to help improve the performance of customer websites on shared hosting platform. As a result of the new hardware, CGI scripts (Perl, PHP) and databases that use real directory paths such as /nameOf/directory/path/here/host.website cease to work.”

    The host was able to change the directory path so the user.ini file (and possibly the php.ini file) were pointing to the right (new) place(s).

    I did end up having to disable all plugins and reinstall them one-by-one to be able to access the login page, but I think that was a separate issue. Just wanted to say thanks to the community for the assistance and resolve my case for posterity.

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