Fix: Abort with 400 when file type is not recognized. (Redmine issue: #7588)

lib/hawat/blueprints/reports/__init__.py

@@ -369,7 +369,7 @@ class DataView(FileIdView):
         elif filetype == 'jsonzip':
             fileext = 'json.zip'
         else:
-            raise ValueError("Requested invalid data file type '{}'".format(filetype))
+            flask.abort(400, "Requested invalid data file type '{}'".format(filetype))
         return 'security-report-{}.{}'.format(fileid, fileext)