E0411: A cron is wrong

A cron's spec is a cron expression (0 7 * * 1-5, with an optional CRON_TZ=…) or @every 10m, and it decorates a function taking a context.Context and provided types, returning nothing or an error. Reported at boot.

Wrong

@web.Cron("every 10 minutes")
func cleanUp(ctx context.Context) {}

Right

@web.Cron("@every 10m")
func cleanUp(ctx context.Context) {}