@AdMeGreek
There are almost only notices, i.e.:
Constant ABS_PATH already defined in /home/igiorgis/public_html/kautesaggelies.com/oc-content/plugins/backoffice_manager/function/feedback.php on line 2 >> can be fixed upgrading plugin (just file upgrade)
But notice does not mean error, it is just notice (@Aficionado - I know that many notices can bring error
)
Not sure about this:
PHP Warning: Illegal string offset 'pk_i_id' in /home/igiorgis/public_html/kautesaggelies.com/oc-includes/osclass/helpers/hDefines.php on line 503 ... cannot find what is behind this...
I do not think it is bug in your side, but something with application. Try to create new one what it brings