emqx emqx_ctl log handlers set-level file debug [error] {not_found,file}

docker install emqx execute "emqx_ctl log handlers set-level file debug" in container console is "[error] {not_found,file}"

emqx.conf:
log.to = file                                                                                                                        
log.level = warning                                                                                                                                
log.dir = log
log.file = emqx.log                                                                                                                                                                                                                                                                                 
log.rotation = on                                                                                                   
log.rotation.size = 10MB                                                                                                                
log.rotation.count = 5