Joomla 2.x Smart Indexer fails with "undefined , undefined, null"
Recently ran into this issue on this very site so I did some digging.
This is apparently a issue with one of the plugins you have installed. On this site we use codehighliter by Union D and apparently this doesn't handle Joomlas Smart Indexer indexing correct.
To fix this do the following
- Find the plugin that is causing the issue - in my case I checked the error_log on the webserver. Quite apparent in the log as it says "Call do undefined method..." and in there you will also find "referer: XxXxX?option=com_finder&view=indexer&tmpl=component
- Edit the file where the issue seem to be - see 1.
- Do a search for " onContentPrepare "
- Insert the following just below it
This should fix the issue - it did for me!