If you are using aws configure sso
to populate your ~/.aws/credentials
file and you get the following error when you try and reauthorize, then you can solve this problem as follows:
An error occurred (UnauthorizedException) when calling ListAccounts operation: Session token not found or invalid
Step 1 – Logout from SSO
aws sso logout
Step 2 – Reconfigure SSO with previous defaults
aws configure sso