gitea: Error 500 when trying to webview a specific repository

• Gitea version (or commit ref):
• Git version: 1.1.4
• Operating system: Debian 8
• Database:
  • MySQL
• Can you reproduce the bug at https://try.gitea.io:
  • No
• Log gist: in log/gitea.log:

[...routers/repo/view.go:52 renderDirectory()] [E] GetCommitsInfo: GetCommitByPath (/Iconr): Length must be 40:

Description

I manage several repositories via Gitea, and they a working like a charm. But one specific throws an 500 server error when I try to open it in the browser. In the logs I can stat this message:

[...routers/repo/view.go:52 renderDirectory()] [E] GetCommitsInfo: GetCommitByPath (/Iconr): Length must be 40:

But I can clone and push without any problem.

Where to start debugging?

Cheers, Marianne

Screenshots