Check if the versioned file exists before trying to do the versioning
Check if the versioned file exists before trying to do the versioning

This didn't work with chunked uploading

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