Website in browser Error: example.com unexpectedly closed the connection

I reinstalled the latest Cyberpanel with All Addons version:
Current Version; 2.4
Build: 4
Current Commit: 120dcd3d20489bcb0549dc8e401726a489c3827f

I created example.com website, obtained SSL for the website and email, but when I tried to reach the website in the browser I received an error:

This site can’t be reached

www.example.com unexpectedly closed the connection.
ERR_CONNECTION_CLOSED

I tried to reach the website from Cyberpanel → List Website → Manage → Preview Website (https://server.domain.com:8090/preview/example.com/) and I received an error:

500
Internal Server Error
An internal server error has occured.

I checked the Error Logs:

2025-11-07 22:47:16.271574 [INFO] [158266] Close SO_REUSEPORT #8 fd: 50.
2025-11-07 22:47:16.271575 [INFO] [158267] Close SO_REUSEPORT #6 fd: 32.
2025-11-07 22:47:16.271581 [NOTICE] [158266] [UDP [::]:443] Worker #3 activates SO_REUSEPORT #3 socket, fd: 45
2025-11-07 22:47:16.271582 [INFO] [158267] Close SO_REUSEPORT #7 fd: 33.
2025-11-07 22:47:16.271589 [INFO] [158267] Close SO_REUSEPORT #8 fd: 34.
2025-11-07 22:47:16.271592 [NOTICE] [158267] [UDP *:443] Worker #5 activates SO_REUSEPORT #5 socket, fd: 31
2025-11-07 22:47:16.271605 [INFO] [158266] [UDP:[::]:443] initPacketsIn: allocated 100 packets
2025-11-07 22:47:16.271627 [NOTICE] [158266] Stop listener *:7080, fd 51.
2025-11-07 22:47:16.271664 [INFO] [158267] [UDP:0.0.0.0:443] initPacketsIn: allocated 100 packets
2025-11-07 22:47:16.271674 [INFO] [158267] Close SO_REUSEPORT #1 fd: 35.
2025-11-07 22:47:16.271677 [INFO] [158267] Close SO_REUSEPORT #2 fd: 36.
2025-11-07 22:47:16.271679 [INFO] [158267] Close SO_REUSEPORT #3 fd: 37.
2025-11-07 22:47:16.271683 [INFO] [158267] Close SO_REUSEPORT #4 fd: 38.
2025-11-07 22:47:16.271686 [INFO] [158267] Close SO_REUSEPORT #6 fd: 40.
2025-11-07 22:47:16.271689 [INFO] [158267] Close SO_REUSEPORT #7 fd: 41.
2025-11-07 22:47:16.271691 [INFO] [158267] Close SO_REUSEPORT #8 fd: 42.
2025-11-07 22:47:16.271695 [NOTICE] [158267] [[::]:443] Worker #5 activates SO_REUSEPORT #5 socket, fd: 39
2025-11-07 22:47:16.271700 [INFO] [158267] Close SO_REUSEPORT #1 fd: 43.
2025-11-07 22:47:16.271703 [INFO] [158267] Close SO_REUSEPORT #2 fd: 44.
2025-11-07 22:47:16.271706 [INFO] [158267] Close SO_REUSEPORT #3 fd: 45.
2025-11-07 22:47:16.271709 [INFO] [158267] Close SO_REUSEPORT #4 fd: 46.
2025-11-07 22:47:16.271712 [INFO] [158267] Close SO_REUSEPORT #6 fd: 48.
2025-11-07 22:47:16.271714 [INFO] [158267] Close SO_REUSEPORT #7 fd: 49.
2025-11-07 22:47:16.271717 [INFO] [158267] Close SO_REUSEPORT #8 fd: 50.
2025-11-07 22:47:16.271720 [NOTICE] [158267] [UDP [::]:443] Worker #5 activates SO_REUSEPORT #5 socket, fd: 47
2025-11-07 22:47:16.271736 [INFO] [158267] [UDP:[::]:443] initPacketsIn: allocated 100 packets
2025-11-07 22:47:16.271744 [NOTICE] [158267] Stop listener *:7080, fd 51.
2025-11-07 22:47:16.272058 [NOTICE] [158267] Successfully change current user to nobody
2025-11-07 22:47:16.272072 [NOTICE] [158267] Core dump is enabled.
2025-11-07 22:47:16.272095 [NOTICE] [158267] Setup swapping space…
2025-11-07 22:47:16.272146 [NOTICE] [158267] LiteSpeed/1.8.4 Open starts successfully!
2025-11-07 22:47:16.272195 [NOTICE] [158266] Successfully change current user to nobody
2025-11-07 22:47:16.272213 [NOTICE] [158266] Core dump is enabled.
2025-11-07 22:47:16.272238 [NOTICE] [158266] Setup swapping space…
2025-11-07 22:47:16.272297 [NOTICE] [158266] LiteSpeed/1.8.4 Open starts successfully!

I tried upgrading Cyberpanel, Fix Permissions in File Manager and it still doesn’t work.
Does anyone know how I could solve this problem?

I have the exact same error after upgrading to the latest cyberpanel.

Does someone have any idea what is going on?

I can access the cyberpanel admin and the litespeed admin. No changes has been made in the config. I do not use Apache for any of our sites.

Okay, I tried re-installing the upgrade and now everything seems to be working again. So you can try that if you experience that an upgrade destroys your sites.

Thanks, I upgraded Cyberpanel and everything is ok!