diff --git a/src/main/java/tech/stackable/hadoop/StackableAccessControlEnforcer.java b/src/main/java/tech/stackable/hadoop/StackableAccessControlEnforcer.java
index dd29054..acad300 100644
--- a/src/main/java/tech/stackable/hadoop/StackableAccessControlEnforcer.java
+++ b/src/main/java/tech/stackable/hadoop/StackableAccessControlEnforcer.java
@@ -121,6 +121,7 @@ public void checkPermissionWithContext(INodeAttributeProvider.AuthorizationConte
         try {
             prettyPrinted = json.writerWithDefaultPrettyPrinter().writeValueAsString(query);
         } catch (JsonProcessingException e) {
+            LOG.error("Could not pretty print the following request body (but non-pretty print did work): {}", body);
             throw new OpaException.SerializeFailed(e);
         }