Kibana is not acessible locally

[hulkbuster (ГРЯЗНОВ ДМИТРИЙ АНДРЕЕВИЧ)]

Hello!
I'm new to Kibana and trying to setup Elastic Stack locally following this tutorial: https://www.rosehosting.com/blog/how-to-install-elk-stack-on-ubuntu-20-04/

All systemd services are running, but Kibana is not accessible.
curl -XGET http://localhost:5601 results in curl: (7) Failed to connect to localhost port 5601: Connection refused

netstat also shows that port 5601 is not listening. I've made these changes to kibana.yml:

    server.name: "myname"
    elasticsearch.hosts: ["http://localhost:9200"]

curl -XGET http://localhost:9200/_cat/indices?v results in

    health status index                             uuid                   pri rep docs.count docs.deleted store.size pri.store.size
    green  open   .kibana_task_manager_7.13.0_001   dRod_dCJQ_KgKweb3rWEUQ   1   0          2            0     15.2kb         15.2kb
    green  open   .apm-custom-link                  TSK6nQ3xTl2LrPvIwYKjOQ   1   0          0            0       208b           208b
    green  open   .kibana-event-log-7.13.0-000001   2p7tc_x4Tba6Ap7DgXW4Xw   1   0          1            0      5.6kb          5.6kb
    green  open   .apm-agent-configuration          bBSQIxt9RRqtC-4OCYxX0Q   1   0          0            0       208b           208b
    green  open   .kibana_7.13.0_001                r1cA1n0bQEWalaihnFlzCw   1   0          6            0      2.1mb          2.1mb
    yellow open   filebeat-7.13.0-2021.05.29-000001 TyEjogC9T2mzQoG01NRwWg   1   1          0            0       208b           208b

Sometimes Kibana flips to "Kibana server is not ready yet" for a moment, but this also happened before insalling Filebeat.

kibana.log contains no errors. What can cause this problem?

[AClerk]

Did you allow traffic in Firewall?

[mohamed_el_mannouti]

you can do this for see all erors

sudo tail -f /vae/log/kibana/*.log