Unsupported Media Type error on publish

[Amelus]

`> Task :publishCommercePublicationToGitLabRepository FAILED FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':publishCommercePublicationToGitLabRepository'.

  Failed to publish publication 'Commerce' to repository 'GitLab' Could not PUT 'someNiceUrl/3.7.0-SNAPSHOT/maven-metadata.xml'. Received status code 415 from server: Unsupported Media Type

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
• Get more help at https://help.gradle.org`

Good luck fixing :D

[aepfli]

After close investigation i found the error in a missconception within the plugin.

It is not possible to release to a group with the plugin. Therefor upload needs to be defined for a project! which you actually did, but the endpoint was a wrong one.

Pull request will be opened soon, with including tests