Migration loraserver v3 to chirpstack v4 failed

I know loraserver might be a bit old, but loraserver v3 is actually chirpstack v3, right? But when I use GitHub - chirpstack/chirpstack-v3-to-v4: Utility to migate ChirpStack v3 data into ChirpStack v4. transfer failed.

I’m following the documentation to use version 4.11.0 instead of the higher chirpstack v4.

~ # ./loraserver version
3.3.0
$ ./chirpstack-v3-to-v4 --cs-config-file chirpstack.toml --as-config-file lora-app-server.toml --ns-config-file loraserver.toml
2025/07/09 15:12:27 Reading ChirpStack configuration file: chirpstack.toml
2025/07/09 15:12:27 Reading AS configuration file: lora-app-server.toml
2025/07/09 15:12:27 Start migration
2025/07/09 15:12:27 Migrating users
2025/07/09 15:12:27 Select users errormissing destination name username in *[]main.User

chirpstack v4 version:

~ $ chirpstack --version
chirpstack 4.11.0

@brocaar Any suggestions? Thanks!