backwards compat to older xcache versions, don't fail when trying to clear cache by prefix
backwards compat to older xcache versions, don't fail when trying to clear cache by prefix

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