Error: class-wp-hook.php on line 298

  • Hi WordPress Community,

    I’m experiencing this error (https://www….co.uk/wp-admin/post.php)

    Has anyone had this before / any info on fixing the issue?

    Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in /srv/users/serverpilot/apps/…/public/wp-includes/class-wp-hook.php on line 298

    Warning: Cannot modify header information – headers already sent by (output started at /srv/users/serverpilot/apps/…y/public/wp-includes/class-wp-hook.php:298) in /srv/users/serverpilot/apps/…/public/wp-admin/post.php on line 197

    Warning: Cannot modify header information – headers already sent by (output started at /srv/users/serverpilot/apps/…/public/wp-includes/class-wp-hook.php:298) in /srv/users/serverpilot/apps/…/public/wp-includes/pluggable.php on line 1179

    Thank you

Viewing 1 replies (of 1 total)
  • Moderator James Huff

    (@macmanx)

    Try deactivating all plugins. If that resolves the issue, reactivate each one individually until you find the cause.

    If that does not resolve the issue, try switching to the Twenty Sixteen theme to rule-out a theme-specific issue (theme functions can interfere like plugins).

Viewing 1 replies (of 1 total)
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