Traceback (most recent call last):


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/werkzeug/serving.py", line 304, in run_wsgi

execute(self.server.app)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/werkzeug/serving.py", line 292, in execute

application_iter = app(environ, start_response)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/server.py", line 132, in __call__

return backend_app(environ, start_response)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/app.py", line 2309, in __call__

return self.wsgi_app(environ, start_response)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/app.py", line 2295, in wsgi_app

response = self.handle_exception(e)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask_cors/extension.py", line 161, in wrapped_function

return cors_after_request(app.make_response(f(*args, **kwargs)))


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/app.py", line 1741, in handle_exception

reraise(exc_type, exc_value, tb)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/_compat.py", line 35, in reraise

raise value


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/app.py", line 2292, in wsgi_app

response = self.full_dispatch_request()


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/app.py", line 1815, in full_dispatch_request

rv = self.handle_user_exception(e)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask_cors/extension.py", line 161, in wrapped_function

return cors_after_request(app.make_response(f(*args, **kwargs)))


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/app.py", line 1718, in handle_user_exception

reraise(exc_type, exc_value, tb)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/_compat.py", line 35, in reraise

raise value


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/app.py", line 1813, in full_dispatch_request

rv = self.dispatch_request()


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/flask/app.py", line 1799, in dispatch_request

return self.view_functions[rule.endpoint](**req.view_args)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/core/utils.py", line 140, in __call__

result = self.callback(request, request.url, {})


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/core/responses.py", line 168, in dispatch

return cls()._dispatch(*args, **kwargs)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/core/responses.py", line 259, in _dispatch

return self.call_action()


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/core/responses.py", line 340, in call_action

response = method()


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/core/utils.py", line 264, in _wrapper

response = f(*args, **kwargs)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/cloudformation/responses.py", line 108, in create_change_set

change_set_type=update_or_create,


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/cloudformation/models.py", line 452, in create_change_set

cross_stack_resources=self.exports


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/cloudformation/models.py", line 295, in __init__

create_change_set=True,


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/cloudformation/models.py", line 187, in __init__

self.resource_map = self._create_resource_map()


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/cloudformation/models.py", line 195, in _create_resource_map

resource_map.create()


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/cloudformation/parsing.py", line 482, in create

if isinstance(self[resource], ec2_models.TaggedEC2Resource):


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/moto/cloudformation/parsing.py", line 415, in __getitem__

resource_logical_id, resource_json, self, self._region_name)


 "/opt/code/localstack/localstack/services/cloudformation/cloudformation_starter.py", line 173, in parse_and_create_resource

return _parse_and_create_resource(logical_id, resource_json, resources_map, region_name)


 "/opt/code/localstack/localstack/services/cloudformation/cloudformation_starter.py", line 260, in _parse_and_create_resource

result = deploy_func(logical_id, resource_wrapped, stack_name=stack_name)


 "/opt/code/localstack/localstack/utils/cloudformation/template_deployer.py", line 671, in deploy_resource

result = deploy_resource_via_sdk_function(resource_id, resources, resource_type, func, stack_name)


 "/opt/code/localstack/localstack/utils/cloudformation/template_deployer.py", line 741, in deploy_resource_via_sdk_function

raise e


 "/opt/code/localstack/localstack/utils/cloudformation/template_deployer.py", line 738, in deploy_resource_via_sdk_function

result = function(**params)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/botocore/client.py", line 357, in _api_call

return self._make_api_call(operation_name, kwargs)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/botocore/client.py", line 634, in _make_api_call

api_params, operation_model, context=request_context)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/botocore/client.py", line 682, in _convert_to_request_dict

api_params, operation_model)


 "/opt/code/localstack/.venv/lib/python3.6/site-packages/botocore/validate.py", line 297, in serialize_to_request

raise ParamValidationError(report=report.generate_report())
botocore.exceptions.ParamValidationError: Parameter validation failed:

Traceback (most recent call last):


 "/Library/Frameworks/Python.framework/Versions/3.7/bin/hrun", line 11, in <module>

sys.exit(main_hrun())


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/httprunner/cli.py", line 95, in main_hrun

html_report_template=args.html_report_template


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/httprunner/api.py", line 256, in gen_html_report

html_report_template


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/httprunner/report.py", line 99, in render_html_report

start_at_timestamp = int(summary["time"]["start_at"])
KeyError: 'start_at'
