RedHatRel had a type, causing a "Undefined variable: redhatrel in...

RedHatRel had a type, causing a "Undefined variable: redhatrel in /tmp/ispconfig3_install/htf-common-issues.php on line 179" when trying to run it
3 jobs for patch-1 in 2 minutes and 9 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
failed #1302
build

00:02:09

 
  Test
skipped #1304
allowed to fail
code_quality
skipped #1303
test
 
Name Stage Failure
failed
build Build
Checking out 8affe773 as patch-1...

Skipping Git submodules setup
$ if [[ -z "$CI_COMMIT_TAG" ]]; then # collapsed multi-line command
$ /build/build.sh
Building Heroku-based application using gliderlabs/herokuish docker image...
invalid argument "/patch-1:8affe77330e9b3a860bd89275eedb1c20d88c8f0" for "-t, --tag" flag: invalid reference format
See 'docker build --help'.
ERROR: Job failed: exit code 1