How to open port on server?

Hi! Currently I want to open port 8899 on my server (openlitespees, centos7,cyberpanel)

But when I use the command
# firewall-cmd --zone=public --permanent --add-port=8890/tcp
# firewall-cmd --reload

Then I checked with the following command, it was not successful
# telnet 8899

Trying 2606:4700:30::681c:725...
Trying 2606:4700:30::681c:625...


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