Gateway attachment failed to delete, but the attachment can't be found. Where is the problem?

Question

Trying to use the Cloud Formation to create a new stack, I'm receiving the follow error when deleting the stack:

Network vpc-1c202306 has some mapped public address(es). Please unmap those public address(es) before detaching the gateway.

After that:

The following resource(s) failed to delete: [GatewayAttachment].

Configuration:

  GatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref VpcId
      InternetGatewayId: !Ref InternetGatewayID

Looking for all AWS::EC2::VPCGatewayAttachment:

aws configservice list-discovered-resources --resource-type "AWS::EC2::VPCGatewayAttachment"

Nothing is found.

Trying the "force delete" for the stack, the AWS shows a message "You may retain resources that are failing to delete" with the id of the resource to be ignored on the deletion process:

GatewayAttachment

spike-Gatew-2OHGCPI1AGQBC

So, where is this spike-Gatew-2OHGCPI1AGQBC?