Warning: Invalid argument supplied

Hi,

I have been adding extension contrib modules and recently started getting the following warning message out of the blue.

Warning: Invalid argument supplied for foreach() in opigno_class_app_views_query_alter() (line 408 of /home/liikanjitsu/public_html/mindsets.eu/pedles/dev_d7-opigno/profiles/opigno_lms/modules/opigno/opigno_class_app/opigno_class_app.module). 

I have not touch the Opigno profile/apps, nor the views module so far.

Can anyone tell me what is or has gone wrong and how to fix it?

Kr,

Chris

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