Ubuntu can't find 'main' module

This error typically occurs when the main module or the required package is missing or not installed properly in Ubuntu.

To resolve this issue, you can try the following steps:

1. Check if the required package is installed or not using the following command:

   dpkg -l <package_name>

Replace `<package_name>` with the name of the package you want to check. If the package is not installed, you can install it using the following command:

   sudo apt-get install <package_name>

2. If the required package is already installed, you can try reinstalling it using the following command:

   sudo apt-get install --reinstall <package_name>

3. If none of the above solutions work, you can try updating your Ubuntu system to the latest version using the following command:

   sudo apt-get update && sudo apt-get upgrade

This will update all the packages on your system to the latest version and may resolve the issue.

I hope this helps!