Guacamole error logging messages missing in Grafana Loki log

[MoritzWeber0]

Authentication failed logs don't appear in the error log, but are shown in kubectl logs:

13:15:11.170 [http-nio-8080-exec-3] WARN  o.a.g.r.auth.AuthenticationService - Authentication attempt from 10.42.0.91 for user "guacadmin" failed.
13:15:31.685 [http-nio-8080-exec-5] WARN  o.a.g.r.auth.AuthenticationService - Authentication attempt from [10.42.0.1, 10.42.0.37] for user "guacadmin" failed.
13:15:36.375 [http-nio-8080-exec-24] WARN  o.a.g.r.auth.AuthenticationService - Authentication attempt from [10.42.0.1, 10.42.0.37] for user "guacadmin" failed.
13:18:59.980 [http-nio-8080-exec-16] WARN  o.a.g.r.auth.AuthenticationService - Authentication attempt from [10.42.0.1, 10.42.0.37] for user "guacadmin" failed.
13:21:45.787 [http-nio-8080-exec-13] WARN  o.a.g.r.auth.AuthenticationService - Authentication attempt from [10.42.0.1, 10.42.0.37] for user "guacadmin" failed.
13:21:49.794 [http-nio-8080-exec-16] WARN  o.a.g.r.auth.AuthenticationService - Authentication attempt from [10.42.0.1, 10.42.0.37] for user "guacadmin" failed.