Fails to create issue comment after issue is created

[achilleas-k]

The issue creation added in #61 works for the creation of the issue, but adding a comment to report on problems after the initial issue is created doesn't work.

Error message: Failed to create issue or comment on XML repo: [500] {"message":"issue does not exist [id: 0, repo_id: 1338, index: 298]","url":"https://github.com/gogs/docs-api"}