MichaWha on "[Plugin: Polylang] Catchable fatal error: Object of class WP_Error could not be converted to string"

Hi guys, sorry for replying to a pretty old thread but I'm having the same issue with the latest version of WP and Polylang, is there a fix for that?
I tried Polylang on a local WP blog with no other plugin installed and it worked, but on my real site there are several other plugins, could it be because of that?
I'd really like to use this plugin, it looks pretty awesome!