I encountered this error today on our AWS pipeline, in the CodeBuild Step:
VPC_CLIENT_ERROR: Unexpected EC2 error: InvalidGroup.NotFound
The only mention of this exact error I could find was here (but it's in Japanese I think) - https://qiita.com/matsuda-hiroki/items/39188d52a002b5461d6f.
I found a similar, but not the same, error here - AWS CodeBuild VPC_CLIENT_ERROR: Unexpected EC2 error: UnauthorizedOperation
Does anyone know what this means?