Repository has no tags yet
Use git tag command to add a new one:
git tag -a v1.4 -m 'version 1.4'
On May, 9th GitLab may not be available, see also https://aktuelles.tugraz.at/news/announce.shtml#04-27
Use git tag command to add a new one:
git tag -a v1.4 -m 'version 1.4'