### Environment * Python version: * MrMap version: <!-- Describe in detail the exact steps that someone else can take to reproduce this bug using the current stable release of MrMap. Begin with the creation of any necessary database objects and call out every operation being performed explicitly. If reporting a bug in the REST API, be sure to reconstruct the raw HTTP request(s) being made: Don't rely on a client library such as pynetbox. --> ### Steps to Reproduce 1. open http://localhost:5173/#/HarvestingJob/create and create an harvesting job for a service which has already an existing harvesting job 2. Backend will response with 400 3. No Error is displayed in the html form <!-- What did you expect to happen? --> ### Expected Behavior API Errors like: ```json { "errors": [ { "detail": "There is an existing harvesting job for this service.", "status": "400", "source": { "pointer": "/data" }, "code": "unique" } ] } ``` are displayed in the html form. <!-- What happened instead? --> ### Observed Behavior Error messages with global jsonpointer are not displayed