Mosquitto broker "log_dest" Question

I’m running:
Mosquitto broker Version: 6.2.1 on
Home Assistant 2023.5.4
Supervisor 2023.04.1
Operating System 10.2
Frontend 20230503.3

I am trying to have the log written to a file. My current configuration is:

  - username: fakeuser1
    password: fakepassword1
require_certificate: false
certfile: server.crt
keyfile: server.key
  active: false
  folder: mosquitto
  log_type: all
  log_dest: file /var/log/mosquitto/mosquitto.log
  log_facility: 5
cafile: ca.crt
debug: false

However, no log ever appears in the folder: /var/log/mosquitto/mosquitto.log
I figure there is something [simple] I have missed so any suggestions would be appreciated.