def analyse_patch_request_errors(request_validator: UserRequest, data: Data, filename: str, method_parameters: dict) \ -> Union[tuple, None]: try: request_validator.existent_filename_validator(filename) except Exception as nonexistent_train_filename: return ( jsonify( {Constants.MESSAGE_RESULT: str(nonexistent_train_filename)}), Constants.HTTP_STATUS_CODE_NOT_FOUND, ) module_path, class_name = data.get_module_and_class_from_a_executor_name( filename) class_method = data.get_class_method_from_a_executor_name(filename) try: request_validator.valid_method_parameters_validator( module_path, class_name, class_method, method_parameters) except Exception as invalid_function_parameters: return ( jsonify( {Constants.MESSAGE_RESULT: str(invalid_function_parameters)}), Constants.HTTP_STATUS_CODE_NOT_ACCEPTABLE, ) return None