access.log stays empty

[FredFoo]

• Gitea version (or commit ref): 1.14.0+dev-449-ge0c753e77 (latest docker image (non-rootless))
• Git version:
• Operating system:
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • [x ] No
• Log gist:

Description

I did activate the access log in the config using

DISABLE_ROUTER_LOG=false
ENABLE_ACCESS_LOG=true
ACCESS=file

access.log file appears in the expected location but stays empty. If you tail it you can see that on incoming requests emtpy lines are added.

gitea.log contains error messages:
2020/12/23 14:49:49 ...outers/routes/chi.go:71:1() [E] Could not set up macaron access logger: template: log:1:6: executing "log" at <.Ctx.RemoteAddr>: can't evaluate field Ctx in type routes.routerLoggerOptions