Unable to generate repo if template has no Issue Labels

[gabriel-vasile]

Description

To reproduce in web UI:

1. create a repo and check "Mark repository as template"
2. create another repo using the template in step 1. In "Template Items", check "Issue Labels" checkmark.

What I expected: step 2 creates a new, empty repo
What happened: status code 500, web/repo/repo.go:195:handleCreateError() [E] CreatePost: no element on slice when insert.

Gitea Version

 1.18.0+dev-209-g7a31292c2 built with GNU Make 4.3, go1.18 : bindata, sqlite, sqlite_unlock_notify

Can you reproduce the bug on the Gitea demo site?

Yes

Log Gist

No response

Screenshots

No response

Git Version

No response

Operating System

No response

How are you running Gitea?

./gitea web

Database

No response

[wxiaoguang]

Wait for backport