PHP Warning – how to find cause?

  • I am having trouble tracking the source of this PHP warning

    PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in /home/xyz/public_html/mydomain.com/wp-includes/plugin.php on line 199

    I am using php 5.4 with error_reporting = "E_ALL & ~E_DEPRECATED & ~E_STRICT".

    I think the last plugin I updated was autoptomize but I am not certain and the warning doesn’t indicate which plugin is at fault.

    Any guidance welcome.

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  • Thread Starter barthat

    (@barthat)

    It looks like this warning is caused by wp-super-cache.

    When I inititate a cache preload I can see these warnings in the php log.

    I will see what I can find with wp-super-cache debig enabled.

    Thread Starter barthat

    (@barthat)

    Unfortunately WP Super Cache debug did not reveal anything suspicious.

Viewing 2 replies - 1 through 2 (of 2 total)
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