Gitea API - Cannot add comment to PR when using external issue tracker

[chanhlt]

• Gitea version (or commit ref):
• Git version: 1.5.0
• Operating system: Debian 9
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL): https://try.gitea.io/chanhlt/test-repo/pulls/1
  • No
  • Not relevant
• Log gist:

Description

When I try to use API to add comment to a pull request.
It works perfectly if I use built-in issue tracker.
However, when I change to use an external one like Redmine.
I cannot use the API anymore.
I get 404 error.

Screenshots

Using built-in issue tracker

Using external issue tracker

[lunny]

Which API did you use to add comment?

[chanhlt]

@lunny
I am sorry . I used this API: /api/v1/repos/{owner}/{repo}/issues/{index}/comments
Add a comment to an issue