AMI Using the Lambda in Cloud formation Issue

AMIFunction: Type: AWS::Lambda::Function Properties: Handler: index.handler Role: !GetAtt LambdaExecutionRole.Arn Code: ZipFile: !Sub | import logging import cfnresponse import json import boto3 from threading import Timer from botocore.exceptions import WaiterError

        logger = logging.getLogger()
        logger.setLevel(logging.INFO)

        def handler(event, context):

          ec2 = boto3.resource('ec2')
          physicalId = event['PhysicalResourceId'] if 'PhysicalResourceId' in event else None

          def success(data={}):
            cfnresponse.send(event, context, cfnresponse.SUCCESS, data, physicalId)

          def failed(e):
            cfnresponse.send(event, context, cfnresponse.FAILED, str(e), physicalId)

          logger.info('Request received: %s\n' % json.dumps(event))

          try:
            instanceId = event['ResourceProperties']['InstanceId']
            if (not instanceId):
              raise 'InstanceID required'

            if not 'RequestType' in event:
              success({'Data': 'Unhandled request type'})
              return
              
            if event['RequestType'] == 'Delete':
              if (not physicalId.startswith('ami-')):
                raise 'Unknown PhysicalId: %s' % physicalId
              
              ec2client = boto3.client('ec2')
              images = ec2client.describe_images(ImageIds=[physicalId])
              for image in images['Images']:
                ec2.Image(image['ImageId']).deregister()
                snapshots = ([bdm['Ebs']['SnapshotId'] 
                              for bdm in image['BlockDeviceMappings'] 
                              if 'Ebs' in bdm and 'SnapshotId' in bdm['Ebs']])
                for snapshot in snapshots:
                  ec2.Snapshot(snapshot).delete()

              success({'Data': 'OK'})
            elif event['RequestType'] in set(['Create', 'Update']):
              if not physicalId:  # AMI creation has not been requested yet
                instance = ec2.Instance(instanceId)
                instance.wait_until_stopped()

                image = instance.create_image(Name="Automatic from CloudFormation stack ${AWS::StackName}")

                physicalId = image.image_id
              else:
                logger.info('Continuing in awaiting image available: %s\n' % physicalId)

              ec2client = boto3.client('ec2')
              waiter = ec2client.get_waiter('image_available')

              try:
                waiter.wait(ImageIds=[physicalId], WaiterConfig={'Delay': 30, 'MaxAttempts': 6})
              except WaiterError as e:
                # Request the same event but set PhysicalResourceId so that the AMI is not created again
                event['PhysicalResourceId'] = physicalId
                logger.info('Timeout reached, continuing function: %s\n' % json.dumps(event))
                lambda_client = boto3.client('lambda')
                lambda_client.invoke(FunctionName=context.invoked_function_arn, 
                                      InvocationType='Event',
                                      Payload=json.dumps(event))
                return

              success({'Data': 'OK'})
            else:
              success({'Data': 'OK'})
          except Exception as e:
            failed(e)
    Runtime: python3.9
    Timeout: 100

for this code getting error as **Failed to receive 1 resource signal(s) within the specified duration ** any solution ?

**lambda log:**Response { "errorMessage": "'ResponseURL'", "errorType": "KeyError", "requestId": "8e439e3f-a409-40d3-aecc-73c37e33ed7d", "stackTrace": [ " File "/var/task/index.py", line 78, in handler\n failed(e)\n", " File "/var/task/index.py", line 20, in failed\n cfnresponse.send(event, context, cfnresponse.FAILED, str(e), physicalId)\n", " File "/var/task/cfnresponse.py", line 19, in send\n responseUrl = event['ResponseURL']\n" ] }