Error on Windows: minimum field size of 9, GetSessionTokenInput.SerialNumber

[remal]

I'm trying to use mfaws and getting this error:

InvalidParameter: 1 validation error(s) found.
- minimum field size of 9, GetSessionTokenInput.SerialNumber

 

Steps to reproduce:

1. Download the latest release for Windows
2. Configure ~/.aws/config:

[default]
region = eu-central-1
output = json

3. Configure ~/.aws/credentials:

[default-long-term]
aws_access_key_id = XXXXXXXXXXXXXXXXXXXX
aws_secret_access_key = XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

4. Run mfaws: mfaws -p default
5. Enter MFA code from device