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1. wordprezzer
   Member
   Posted 12 months ago #
   

   Hello,

   I'm trying to install a theme but after installation, I have the following error message:

   "Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'anno_init' not found or invalid function name in C:\wamp\www\wordpress\wp-includes\plugin.php on line 405"

   Could somebody tell why this error and how to fix it?

   Thank you in advance

2. Tara
   Member
   Posted 12 months ago #
   

   check your theme is compatible with your WP version.

3. wordprezzer
   Member
   Posted 12 months ago #
   

   Thanks.
   It works generally but sometimes I have this error, especially when I click on Menu.

4. Tara
   Member
   Posted 12 months ago #
   

   try:

   -deactivating ALL plugins temporarily to narrow down the problem. If the problem goes away, activate them individually (one-by-one) to find the problematic plugin.
   -switching to the unedited default theme (that came with your version of WP) for a moment by renaming your current theme's folder in wp-content/themes. The idea is to force WordPress to fall back to the default theme to rule out any theme-specific issue.

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