Hello,
I'm on this issue since yesterday without any means to understand what's going wrong. I install awscli via pip, setup my credentials, and now I'm able to retrieve my the whole list of logs hosted on Cloudwatch.
But when I try to display logs, I always have the same error:
An error occurred (InvalidParameterException) when calling the GetLogEvents operation: 1 validation error detected: Value 'log-group:testloginstance' at 'logStreamName' failed to satisfy constraint: Member must satisfy regular expression pattern