refactoring

Change-Id: I631ff6bfc2884287a8e629196b3810086bbd21cf
diff --git a/src/main/java/de/ids_mannheim/korap/security/auth/KustvaktAuthenticationManager.java b/src/main/java/de/ids_mannheim/korap/security/auth/KustvaktAuthenticationManager.java
index 918650a..8decf1d 100644
--- a/src/main/java/de/ids_mannheim/korap/security/auth/KustvaktAuthenticationManager.java
+++ b/src/main/java/de/ids_mannheim/korap/security/auth/KustvaktAuthenticationManager.java
@@ -761,7 +761,7 @@
             return data;
         }
         catch (KustvaktException e) {
-            jlog.error("Error during user data retrieval!", e.getEntity());
+            jlog.error("Error during user data retrieval: {}", e.getEntity());
             throw new WrappedException(e, StatusCodes.GET_ACCOUNT_FAILED);
         }
     }