Ubuntu 20 : Kannel : Cannot start with store-file failing System error 13

Tried Kannel on an Ubuntu 20 SBC and got this error when testing the store-file

2022-11-11 00:47:47 [1337] [0] INFO: Cannot open any store file, starting a new one
2022-11-11 00:47:47 [1337] [0] ERROR: Failed to open '/etc/kannel/store' for writing, cannot create store-file
2022-11-11 00:47:47 [1337] [0] ERROR: System error 13: Permission denied
2022-11-11 00:47:47 [1337] [0] PANIC: Cannot start with store-file failing

Doesn't get resolved through usermod, my installation is under root.

Solution was to move the store file to a folder accessible to Kannel, so I placed it in the log file for now.

store-type = file
store-location = "/var/log/kannel/store"

That works.