Fixing Flask Restful example
@@ -70,7 +70,7 @@ class DateAddResource(Resource):
# This error handler is necessary for usage with Flask-RESTful
@parser.error_handler
-def handle_request_parsing_error(err, req):
+def handle_request_parsing_error(err, req, schema):
"""webargs error handler that uses Flask-RESTful's abort function to return
a JSON error response to the client.
"""
