First login via LDAP fails if there is no avatar #35884
Description
Description
When a LDAP user that Gitea does not yet know tries to log in for the first time and does not have an avatar (and the auth source has the Avatar Attribute set), it fails, and the second attempt succeeds.
The log contains the following lines:
2025/11/06 13:28:00 services/auth/signin.go:119:UserSignIn() [W] Failed to login 'git-test' via 'FreeIPA': image.DecodeConfig: image: unknown format
2025/11/06 13:28:00 routers/web/auth/auth.go:222:SignInPost() [W] Failed authentication attempt for git-test from <redacted>: user does not exist [uid: 0, name: git-test]
Subsequent login attempts succeed.
Gitea Version
1.24.3
Can you reproduce the bug on the Gitea demo site?
No
Log Gist
No response
Screenshots
No response
Git Version
No response
Operating System
No response
How are you running Gitea?
Downloaded the official release
Database
SQLite