message: better error message when content-type doesn't exist
diff: @@ -73,9 +73,11 @@ class Searchers {
  upstreamDoc: { data: resource, meta },
  read: this._read(branch)
  });
  - let pristineResult = await (documentContext.pristineDoc());
  + let pristineResult = await documentContext.pristineDoc();
  + if (pristineResult) {
  authorizedResult = await schema.applyReadAuthorization(pristineResult, { session, type, id });
  }
  + }
  if (!authorizedResult) {
  throw new Error(`No such resource ${branch}/${type}/${id}`, {
  