i'm using Joomla 3.6.2 and the Mini k2 content module gives me this error:
"Strict Standards: Non-static method K2ModelItemlist::getCategoryTree() should not be called statically in /public_html/modules/mod_minik2/helper.php on line 593"
Hi, I'm unable to replicate your issue at my end. Anyway, it just a notice. You can hide it by going to administrator page, go to System > Global Configuration > Error Reporting , Set no None