Using the Stash REST API and sending POST or PUT requests, if the JSON payload is not formated correctly the Stash server returns HTTP 500 instead of HTTP 400.

• STEPS TO REPRODUCE
  curl -H "Authorization: Basic ..." -H "Content-Type: application/json" -X PUT -d ' " {hook-url-0" : "some-url"}

  ' 'https://stash.example.com/rest/api/1.0/projects/

  {projectKey}

  /repos/

  {repositorySlug}

  /settings/hooks/

  {hookKey}

  /enabled

Note that the payload is not correct JSON.

• RESULTS
  Stash returns
  HTTP/1.1 500 Internal Server Error
  {
  "errors": [ { "context": null, "exceptionName": null, "message": "An error occurred while processing the request. Check the server logs for more information." }

  ]
  }

Stash should return,
400 Bad Request