I am maintaining a WordPress site that was set up by someone else, so I'm running a bit blind. It is quite customised, so I imagine something along the line has conflicted with some plugins, but I cannot figure out what!
I am getting the following errors:
Notice: Undefined offset: 0 in /folder/path/wp-includes/plugin.php on line 764
Notice: Undefined variable: wp_ver in /folder/path/wp-content/plugins/wordpress-popular-posts/wordpress-popular-posts.php on line 113
Notice: Trying to get property of non-object in /folder/path/wp-content/plugins/efficient-related-posts/efficient-related-posts.php on line 285
In addition, whenever the Relevanssi plugin tries to use the 'Did you mean?' suggestion, the search page breaks completely - it just cuts off just before the search results, like it can't find an include or something. This is even more important than the above warnings, because I can just turn warnings off and the rest of the site works ok, but the search results breaking is not good!
Can anyone give me an idea about what could be causing this?