0

Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line 0' Error

Using Theme 2011. Error accessing wp-admin dashboard. Have disabled plugins one by one and problem appears to be related to Jetpack! Has anybody had the same experience?

0

Do you have error logging enabled? If so, I'd check in your wp-content directory to view the debug.log file. If an error is being logged, that'll give you a clue as to which plugin is causing it.

If not familiar with WP error logging, see here. Pretty simple to enable.

https://codex.wordpress.org/Debugging_in_WordPress

  • Error logging shows the following: [24-Apr-2017 12:57:34 UTC] PHP Fatal error: Out of memory (allocated 121110528) (tried to allocate 173472 bytes) in /websites/123reg/LinuxPackage21/ad/de/rl/adderleyparish.co.uk/public_html/wp-content/plugins/really-simple-ssl/class-mixed-content-fixer.php on line 109 [24-Apr-2017 12:57:34 UTC] PHP Fatal error: Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line 0 - A plug-in conflict between Jetpack (the last one to be activated) and Really Simple SSL. Have contacted the developer waiting for a response. Will post – Paul Nash Apr 24 '17 at 13:56
  • Dev response: The fatal error you were seeing is an out of memory error. It means the server has some trouble with the memory load. As a result the php execution crashes whenever the memory limit is reached. This can be anywhere in the code. Deactivating plugins sometimes helps. Often memory issues occur when you just clear the cache, so the caching tool is rebuilding the cache, which costs a lot of resources. In most cases it is also temporary: the memory usage depends on the number of users and on actions taken by plugins. - Requesting increase in memory limit – Paul Nash Apr 24 '17 at 15:23

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.