I recently noticed that I was getting an error message from one of my plugins YearList. The page the error occurs on seems to function as expected despite the error, but I would like to resolve the error or at the very least hide it from view.
The error being displayed is:
Message: Non-static method Yearlist::usage() should not be called statically, assuming $this from incompatible context
And the error says it is occuring on this line of
$plugin_info = array( 'pi_usage' => Yearlist::usage() );