Add handler for bad request error

app/api/blueprint.py

@@ -1,6 +1,6 @@
 from flask_restful import Api
 from marshmallow import ValidationError
-from app.errors import NotPresentError
+from app.errors import NotPresentError, BadRequestError
 from flask import Blueprint, jsonify
 
 
@@ -96,6 +96,12 @@ def handle_not_present_error(e):
     return jsonify({'status': 'error', 'message': str(e)}), 404
 
 
+@api_bp.errorhandler(BadRequestError)
+@api_bp.errorhandler(400)
+def handle_bad_request_error(e):
+    return jsonify({'status': 'error', 'message': str(e)}), 400
+
+
 @api_bp.errorhandler(Exception)
 @api_bp.errorhandler(500)
 def handle_unknown_errors(e):

app/errors.py

@@ -1,5 +1,6 @@
 class NotPresentError(Exception):
     pass
 
+
 class BadRequestError(Exception):
     pass