Please, can anyone give me a hand.
ELK 7.15 version on Ubuntu 20.04 LTS.
I had to reinstall the MySQL server 8.0, but when I try to start kibana (systemctl start kibana) in the log apears these lines.
Started Kibana.
Aug 1 11:36:44 SRV-ELK kibana[206080]: FATAL Error: Cannot find module './mysql_logs'
Aug 1 11:36:44 SRV-ELK kibana[206080]: Require stack:
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/plugins/home/server/tutorials/register.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/plugins/home/server/services/tutorials/tutorials_registry.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/plugins/home/server/services/tutorials/index.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/plugins/home/server/services/index.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/plugins/home/server/plugin.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/plugins/home/server/index.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/plugins/plugin.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/plugins/discovery/plugins_discovery.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/plugins/discovery/index.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/plugins/plugins_service.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/plugins/index.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/server.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/root/index.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/bootstrap.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/core/server/index.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/cli/serve/serve.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/cli/cli.js
Aug 1 11:36:44 SRV-ELK kibana[206080]: - /usr/share/kibana/src/cli/dist.js
Aug 1 11:36:44 SRV-ELK systemd[1]: kibana.service: Main process exited, code=exited, status=1/FAILURE
Aug 1 11:36:44 SRV-ELK systemd[1]: kibana.service: Failed with result 'exit-code'.
Aug 1 11:36:47 SRV-ELK systemd[1]: kibana.service: Scheduled restart job, restart counter is at 3.
Aug 1 11:36:47 SRV-ELK systemd[1]: Stopped Kibana.
Aug 1 11:36:47 SRV-ELK systemd[1]: kibana.service: Start request repeated too quickly.
Aug 1 11:36:47 SRV-ELK systemd[1]: kibana.service: Failed with result 'exit-code'.
Aug 1 11:36:47 SRV-ELK systemd[1]: Failed to start Kibana.
Also the file /run/kibana/kibana.pid dissapears.
Thanks in advance.