I have a WP multisite (4.8.1) with bbPress (2.5.14) and some other plugins. Since May this year I get Fatal Errors in php-errors.log

PHP Fatal error: Allowed memory size of 805306368 bytes exhausted (tried to allocate 262144 bytes) in /home/u/u1529178/www/wp-content/plugins/bbpress/includes/replies/template.p

PHP Fatal error: Allowed memory size of 805306368 bytes exhausted (tried to allocate 4096 bytes) in /home/u/u1529178/www/wp-includes/post.php on line 1947

It indicates memory loss. To analyze the cause of the memory loss I have in the first step inactivated almost all plugins and activated them one after another. The only plugin which generated Fatal error was bbPress.

In the second step bbPress was activated annd the other plugins inactivated to analyze if the problem is located in bbPress only or if it can be in a conflict between bbPress and other plugins.

The result was that when bbPress was activated together with WPMembers and ArcMember Login (neccesary for the login function) the Fatal Errrors continued to appear. The conclusion is that it must be some problem in the plugin bbPress.

Do I have to abandon bbPress and try another forum plugin or can I do something to get bbPress to work without generating Fatal errors?

[@vinod-dalvi Participant 7 years, 3 months ago]

Sorry to hear of the problem you are having.

It is working fine on my test site without any issue.

Could you please try fixing the issue as described in the following pages?

https://codex.wordpress.org/Common_WordPress_Errors#Maximum_execution_time_exceeded
http://kb.wpbeaverbuilder.com/article/37-how-to-increase-the-wordpress-allowed-memory-size
http://www.wpbeginner.com/wp-tutorials/fix-wordpress-memory-exhausted-error-increase-php-memory/

You can also try using the below upcoming version 2.6 of bbPress.

https://downloads.wordpress.org/plugin/bbpress.2.6-rc-3.zip

[@gunilla Participant 7 years, 3 months ago]

Thanks for your answer,

In config.php it stands:
define( ‘WP_MAX_MEMORY_LIMIT’ , ‘512M’ );

In .htaccess it stands:
php_value upload_max_filesize 256M
php_value post_max_size 256M
php_value max_execution_time 300
php_value max_input_time 300
php_value memory_limit 768M

768M is the maximum value we can have on our web hotel account.

I will try version 2.6

[@gunilla Participant 7 years, 3 months ago]

Hi again,

How much internal memory do bbPress need?

[@gunilla Participant 7 years, 3 months ago]

It seems the version 2.6 solved the problem. I have seen not PHP Fatal Errors in 12 hours!

[@robin-w Moderator 7 years, 3 months ago]

great – glad you are fixed

[@taim786 Participant 7 years, 2 months ago]

Hi Gunilla,

If you have still not resolved your problem, you need to edit your wp-config.php file which should be located in the root of your WordPress installation. You need to insert below mention code at the end of the file and then this error will disappear.

define( ‘WP_MEMORY_LIMIT’, ‘256M’ );

Source: https://www.webxen.com/kb/wordpress-fatal-error-allowed-memory-size-of-67108864-bytes-exhausted/

[@gunilla Participant 7 years, 2 months ago]

The problem was solved by the not yet published version 2.6-rc-3.