Sorry for the late response! From the server log I see you successfully uploaded the same package after a while. I suppose it is a temporary error condition. Let me know if it happens again!
Dec 8 11:03:31 packages repowatch: RPM upload event MOVED_TO,ISDIR from stephdl in 7.4.1708/nethforge-testing commit-build-upload.hrjdXb
Dec 8 11:03:32 packages repowatch: [ERROR] create_yum_repository failed Directory /var/spool/repomaster/nscom/. must be writable.
Dec 9 09:42:16 packages repowatch: RPM upload event MOVED_TO,ISDIR from stephdl in 7.4.1708/nethforge-testing commit-build-upload.4i4Tkb
Dec 9 09:42:23 packages repowatch: [NOTICE] OK: stephdl added nethserver-sogo-1.6.18-1.ns7.sdl.noarch.rpm to 7.4.1708/nethforge-testing