Added more error checking and debug on missing image support.
Added more error checking and debug on missing image support.

lrytz/core,andreas-p/nextcloud-server,andreas-p/nextcloud-server,Ardinis/server,cernbox/core,bluelml/core,nextcloud/server,owncloud/core,lrytz/core,Ardinis/server,IljaN/core,whitekiba/server,lrytz/core,endsguy/server,pollopolea/core,sharidas/core,michaelletzgus/nextcloud-server,IljaN/core,endsguy/server,whitekiba/server,xx621998xx/server,andreas-p/nextcloud-server,xx621998xx/server,Ardinis/server,owncloud/core,IljaN/core,endsguy/server,nextcloud/server,whitekiba/server,michaelletzgus/nextcloud-server,pmattern/server,michaelletzgus/nextcloud-server,andreas-p/nextcloud-server,cernbox/core,IljaN/core,jbicha/server,owncloud/core,pollopolea/core,pixelipo/server,cernbox/core,bluelml/core,lrytz/core,sharidas/core,cernbox/core,jbicha/server,pmattern/server,pixelipo/server,phil-davis/core,jbicha/server,pollopolea/core,bluelml/core,lrytz/core,pmattern/server,owncloud/core,bluelml/core,endsguy/server,andreas-p/nextcloud-server,cernbox/core,IljaN/core,pollopolea/core,michaelletzgus/nextcloud-server,pmattern/server,owncloud/core,pixelipo/server,jbicha/server,sharidas/core,bluelml/core,pollopolea/core,whitekiba/server,nextcloud/server,xx621998xx/server,Ardinis/server,endsguy/server,sharidas/core,Ardinis/server,pixelipo/server,pixelipo/server,jbicha/server,sharidas/core,whitekiba/server,xx621998xx/server,pmattern/server,nextcloud/server,xx621998xx/server