Hello, I need some help. I want to delete all requests, which are not contains a metadata with a correct expression (jsonpath). I'm trying to call /requests/remove-by-metadata with the following body: { "matchesJsonPath": { "expression": "$.serviceName", "doesNotMatch": "myservice" } } But it's says in the logs: JSON path expression '$.serviceName' failed to match document 'null' because of error 'json can not be null' Anybody have some idea? Thanks in advance.