[Resolved] Fatal error: Unknown: Can't use output buffering in output buffering display

Home Forums Support [Resolved] Fatal error: Unknown: Can't use output buffering in output buffering display

Home Forums Support Fatal error: Unknown: Can't use output buffering in output buffering display

Viewing 9 posts - 1 through 9 (of 9 total)
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  • #626817
    Kay

    Hi!

    The full error message is: “Fatal error: Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line 0”.

    It happens every time I try to customise the appearance of my site via the WP dashboard. My host says it’s a WP matter but I don’t know what to do. I haven’t added any new plugins for a while.

    Any help would be much appreciated – I’ve spent hours trying to sort this out.

    Thank you!
    KJ

    GP Premium 1.6.2
    #626831
    Leo
    Staff
    Customer Support

    Hi there,

    Can you try #1 here first to eliminate any plugin conflicts?
    https://docs.generatepress.com/article/debugging-tips/

    Let me know πŸ™‚

    #626861
    Kay

    Thanks for your quick reply Leo.

    I have found 5 plugins (Heroic Favicon, Elementor, Contact Form 7, Askimet Anti-Spam and Add to Any (the last triggers a “500:Internal Error” message) that set off the fatal error message. Very strange.

    Not sure how to debug the problem – I checked the link you kindly sent but am not sure how to turn on the WP Debug?

    #626959
    Leo
    Staff
    Customer Support

    All of 5 of them do cause an error?

    Elementor, Contact Form 7 and Askimet Anti-Spam should be no problem.

    Can you activate each of them individually and isolate the problem?

    #629624
    Kay

    Thanks for your reply Leo. Yes, those 5 cause the error. I will try your suggestion. Could it also be a memory thing too? I also got a Hostgator 500: Internal Error message. Should I increase the memory on my Hostgator cPanel? This is SO frustrating as I never had a problem before.

    #629626
    Kay

    I just deactivated my GP Premium plugin, just to see. The error messages disappear. Any thoughts on this would be much appreciated. Thanks!

    #629627
    Kay

    Oh, I spoke too soon. Went back into Customise Appearance (with the GP Premium plugin still deactivated) and the error is back!

    #629640
    Kay

    Me again πŸ™‚ Think I have sorted out the problem – I went to my cPanel and upgraded the PHP version. Seems to be working OK now, so maybe it was just a memory issue. Fingers crossed it stays OK.

    #629915
    Leo
    Staff
    Customer Support

    Glad you figured out πŸ™‚

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