Johan Josua Storm

### Environment We are running three windows hosts with each two disks on which the data is saved, all three are running elasticsearch 7.9.3. The two disks are configured in...

Empty username causes TypeError: unsupported format string passed to NoneType.__format__ in debug log statement

1

**Describe the problem:** There is an logger.debug command within the function AddUserAccount() in the file https://github.com/log2timeline/plaso/blob/main/plaso/preprocessors/mediator.py. This logger.debug command tries to print user_account.username. However, when the username is empty (e.g....