Non-static method Upfront_OutputBehavior::_parse_compression()...

Hi guys,

I've updated Upfront 2.3 to 2.4 to 2.5, but the strangest thing happened. The whole theme became a mess with a few errors (screenshot). I've also updated al the themes via the WPMUDEV panel. (Spirit, Fixr, Scribr) to the most recent versions.