Warning at top of website & top menu gone

This warning has appeared at the top of our website, and our top menu bar has disappeared:

Warning: call_user_func_array) expects parameter! +~ be a valid callback, function 'smartwp_remove_wp_block_library_css' not found or invalid function name in /home/customer/www/stpetersmedford.org/public_r includes/class-wp-hook.php on line 307

I don’t know how to decipher this message nor how to fix the problem. Are the two things related (disappearance of top menu, this warning)?

Thank you for any help.

Topic functions hooks menus Wordpress parameter

Category Web

1
answered at

This function, call_user_func_array() is called by add_filter() (or add_action()) that was not declared properly. Scan the code for something like:

add_filter('something', 'smartwp_remove_wp_block_library_css')

to find the culprit. If you do find it and it wasn't something you added/changed, you will have to troubleshoot to determine why this function was not declared/found.

The top menu is still there - you can see it very faintly at the very top of the page as you mouse over the area just above the warning message.

One last thing - it looks like you have display_errors enabled, which is not good practice for a public facing website.

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