Error TLS MQTT

[ruem2802]

I am using rabbitmq version 3.9.6,
I use tls-gen to gen certificates

My config is in rabbitmq.conf:

#MQTT
mqtt.listeners.tcp.default = 1883
mqtt.listeners.ssl.default = 8883

ssl_options.cacertfile = /home/tls-gen/basic/result/ca_certificate
ssl_options.certfile = /home/tls-gen/basic/result/server_certificate
ssl_options.keyfile = /home/tls-gen/basic/result/server_key.pem

ssl_options.verify = verify_none
ssl_options.fail_if_no_peer_cert = false

• Then I run command: sudo systemctl restart rabbitmq-server

• Output: Job for rabbitmq-server.service failed because the control process exited with error code.
  See "systemctl status rabbitmq-server.service" and "journalctl -xe" for details.

• Next I run command: journalctl -xe

• Out put:
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> in function application_master:init/4
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> ancestors: [<0.127.0>]
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> message_queue_len: 1
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> messages: [{'EXIT',<0.129.0>,normal}]
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> links: [<0.127.0>,<0.44.0>]
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> dictionary: []
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> trap_exit: true
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> status: running
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> heap_size: 376
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> stack_size: 29
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> reductions: 188
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0> neighbours:
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.030571+07:00 [erro] <0.128.0>
  Sep 17 22:14:01 ubuntu rabbitmq-server[14366]: 2021-09-17 22:14:01.050860+07:00 [noti] <0.44.0> Application rabbitmq_prelaunch exited with rea
  Sep 17 22:14:02 ubuntu rabbitmq-server[14366]: {"Kernel pid terminated",application_controller,"{application_start_failure,rabbitmq_prelaunch,
  Sep 17 22:14:02 ubuntu rabbitmq-server[14366]: Kernel pid terminated (application_controller) ({application_start_failure,rabbitmq_prelaunch,{
  Sep 17 22:14:02 ubuntu rabbitmq-server[14366]: [1B blob data]
  Sep 17 22:14:02 ubuntu rabbitmq-server[14366]: Crash dump is being written to: erl_crash.dump...done
  Sep 17 22:14:02 ubuntu systemd[1]: rabbitmq-server.service: Main process exited, code=exited, status=1/FAILURE
  Sep 17 22:14:02 ubuntu systemd[1]: rabbitmq-server.service: Failed with result 'exit-code'.
  Sep 17 22:14:02 ubuntu systemd[1]: Failed to start RabbitMQ broker.
  -- Subject: Unit rabbitmq-server.service has failed
  -- Defined-By: systemd
  -- Support: http://www.ubuntu.com/support
  --
  -- Unit rabbitmq-server.service has failed.
  --
  -- The result is RESULT.

What happen with my config, support me, thank!

[ruem2802]

I found reason:
chmod 777 directory and all file certificate -> it's running
I will close issue!