500 internal Error: can't access the CyberPanel dashboared

Hello CyberPanel Support Team,

My CyberPanel installation was working perfectly and then suddenly became inaccessible today. My websites appear to still be online, but I cannot log in to the dashboard on port 8090.

I have performed extensive troubleshooting and have identified a specific error, but I am hesitant about the final step and would appreciate your expert advice.

My Server Environment:

• Operating System: [CentOS 7]

Troubleshooting Steps Taken:

1. Checked Services: Both lscpd and lsws services are active (running).
2. Enabled Debug Mode: After enabling debug mode, the page now shows a specific Python error.

The Exact Error Message: The debug page shows the following ModuleNotFoundError, which seems to be the root cause:

ModuleNotFoundError at / No module named 'databases.mysqlOptimizer' Request Method:GETRequest URL:https://s-cyberpanel.domain.com/Django Version:3.1.3Exception Type:ModuleNotFoundErrorException Value:No module named 'databases.mysqlOptimizer' Exception Location:/usr/local/CyberCP/databases/views.py, line 11, in <module>Python Executable:/usr/local/CyberCP/bin/pythonPython Version:3.6.8 ...

How to Fix this without losing any data?

It appears that your installation has become corrupted. To repair it, simply run the following command:

sh <(curl https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgrade.sh || wget -O - https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgrade.sh)

When prompted for the version, enter 2.4.1 (do not include the letter “v”).

This will reinstall CyberPanel and should resolve any installation issues.

Hope this helps. Best regards.