log type does not work

[jokewwww]

Mosquitto version is v2.0.14

My logging configuration looks like this:
log_timestamp true
log_type none
log_timestamp_format %Y-%m-%dT%H:%M:%S
log_dest file /usr/local/mosquitto/log/mosquitto.log

Even if I set "log type none",The log file still holds all logs
I experimented with different log types,
But, according to the log file is not like the configuration parameters and even print mosquitto system logs in one time