Not able to create a stack on AWS cloudformation

Question

Every time i tried to create a demo stack on cloudformation or demo application on beanstalk, it shows the following error:

Resource handler returned message: "No default VPC for this user. GroupName is only supported for EC2-Classic and default VPC. (Service: Ec2, Status Code: 400, Request ID: 25350395-90e5-4d2c-878d-7473f3d5a60e)" (RequestToken: 94f8918c-5f6b-3825-fcd3-619d5d45ace6, HandlerErrorCode: InvalidRequest)

i am using a yaml file as a  template, both ec2 instance it is creating , is getting terminated automactically.

can anyone help???

Riku_Kobayashi · Answer

Hello.

If you take the error message literally, it looks like the error occurs because there is no default VPC in the region where CloudFormation is deployed.  
If you do not have a default VPC, please create one using the steps described in the document below.  
https://docs.aws.amazon.com/vpc/latest/userguide/work-with-default-vpc.html#create-default-vpc

Not able to create a stack on AWS cloudformation

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