Title: Code 500 on pluginlist
Last modified: September 17, 2016

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# Code 500 on pluginlist

 *  Resolved [Mirko](https://wordpress.org/support/users/miwalter/)
 * (@miwalter)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/)
 * Hi,
    I get an error 500 on trying to use the pluginlist in dashboard. Only fix
   is deactivating the plugin, I have no idea why this happens, sorry. Regards, 
   Mirko

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Author [Till Krüss](https://wordpress.org/support/users/tillkruess/)
 * (@tillkruess)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/#post-8193844)
 * You can turn on error reporting: [https://codex.wordpress.org/WP_DEBUG](https://codex.wordpress.org/WP_DEBUG)
 * And then post the error.
 *  Thread Starter [Mirko](https://wordpress.org/support/users/miwalter/)
 * (@miwalter)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/#post-8193902)
 * In the apache-log I get:
 * mirko [Sat Sep 17 20:31:33 (104)Connection reset by peer: FastCGI: comm with 
   server “/php-fpm-handler” aborted: read failed, referer: [https://www.yellowstoneaussies.de/wp-admin/index.php](https://www.yellowstoneaussies.de/wp-admin/index.php)
   
   mirko [Sat Sep 17 20:31:33 FastCGI: incomplete headers (0 bytes) received from
   server “/php-fpm-handler”, referer: [https://www.yellowstoneaussies.de/wp-admin/index.php](https://www.yellowstoneaussies.de/wp-admin/index.php)
 * I tried disabling the Zend opcache. But now I’m quite clueless… the php.ini settings
   are quite common I think:
 * memory_limit = 300M
    max_input_time = 360 max_execution_time = 4000 output_buffering
   = 16384 post_max_size = 96M upload_max_filesize = 64M
 * (I tried without output_buffering).
 *  Thread Starter [Mirko](https://wordpress.org/support/users/miwalter/)
 * (@miwalter)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/#post-8193906)
 * FYI no helpful information in wordpress debug.log…
 *  Plugin Author [Till Krüss](https://wordpress.org/support/users/tillkruess/)
 * (@tillkruess)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/#post-8193924)
 * How about the PHP error logs?
 * Also, what happens when you turn on `WP_DEBUG`?
    -  This reply was modified 9 years, 8 months ago by [Till Krüss](https://wordpress.org/support/users/tillkruess/).
 *  Thread Starter [Mirko](https://wordpress.org/support/users/miwalter/)
 * (@miwalter)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/#post-8193934)
 * I’m sorry, there is no information, which would be helpfull, only logging messages
   from other things… and of course:
 * _2016-09-17T20:30:23+02:00 JennyUndMirko [Sat Sep 17 20:30:23 2016] [error] [
   client 192.168.0.123] (104)Connection reset by peer: FastCGI: comm with server“/
   php-fpm-handler” aborted: read failed, referer: [https://www.yellowstoneaussies.de/wp-admin/index.php](https://www.yellowstoneaussies.de/wp-admin/index.php)
   _os
    ir_2016-09-17T20:30:23+02:00 JennyUndMirko [Sat Sep 17 20:30:23 2016] [error][
   client 192.168.0.123] FastCGI: incomplete headers (0 bytes) received from server“/
   php-fpm-handler”, referer: [https://www.yellowstoneaussies.de/wp-admin/index.php](https://www.yellowstoneaussies.de/wp-admin/index.php)
 * (Sorry for the “Durcheinander”/garbage – this is a copy from a multitail history…
   which works “quite fine” with ncurses and tmux >.< ).
 * And similar errors – the cause of the 500 I think.
 * FYI WP Redis works. They say I should delete all transient options, I did (and
   tried redis cache after that). Everything works but the plugin list I think.
 * PHP Memory limit is 300MB.
    -  This reply was modified 9 years, 8 months ago by [Mirko](https://wordpress.org/support/users/miwalter/).
 *  Plugin Author [Till Krüss](https://wordpress.org/support/users/tillkruess/)
 * (@tillkruess)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/#post-8193984)
 * Mhh, that sadly not saying anything. Could you ask your hosting provider to have
   a look at the error and what’s causing it?
 * Alternatively, you could try and flush/delete the entire Redis database and see
   if that fixes it.
 *  [blindpet](https://wordpress.org/support/users/blindpet/)
 * (@blindpet)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/#post-8194007)
 * [@miwalter](https://wordpress.org/support/users/miwalter/) try activating the
   plugin via wp-cli, if that works it suggests a misconfiguration with nginx or
   php-fpm

Viewing 7 replies - 1 through 7 (of 7 total)

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 * 7 replies
 * 3 participants
 * Last reply from: [blindpet](https://wordpress.org/support/users/blindpet/)
 * Last activity: [9 years, 8 months ago](https://wordpress.org/support/topic/code-500-on-pluginlist/#post-8194007)
 * Status: resolved