gvm-check-setup shows:
Step 5: Checking Postgresql DB and user ...
Starting postgresql service
OK: Postgresql version and default port are OK.
gvmd | _gvm | UTF8 | C.UTF-8 | C.UTF-8 |
ERROR: No users found. You need to create at least one user to log in.
FIX: create a user by running 'sudo runuser -u _gvm -- gvmd --create-user=<name> --password=<password>'
ERROR: Your GVM-21.4.3 installation is not yet complete!
Please follow the instructions marked with FIX above and run this
script again.
but when I use sudo runuser -u _gvm -- gvmd to try to create a new user, it shows:
Failed to create user: Invalid characters in user name
How can I resolve this and complete the installation? | 
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