Chromium snap is installed but the browswer will not start.

If Chromium Snap is installed but the browser will not start, there could be several reasons for this issue. Here are some troubleshooting steps you can try:

1. **Check for Updates**: Ensure that both the Chromium Snap package and your system are up to date. Use the package manager on your Linux distribution to update the Chromium Snap package to the latest version.

2. **Restart Your System**: Sometimes, a simple restart can resolve issues with software not starting properly.

3. **Check for Error Messages**: Try launching Chromium from the command line to see if it provides any error messages that can help diagnose the issue. Open a terminal and type `chromium` or `chromium-browser` to launch Chromium and observe any error messages that are displayed.

4. **Reinstall Chromium Snap**: If there are issues with the installation, try reinstalling the Chromium Snap package. You can do this using the package manager or by running the appropriate command to reinstall the Snap package.

5. **Check Snap Configuration**: Ensure that Snapd, the service responsible for managing Snap packages, is running correctly on your system. You can check its status and restart it if necessary.

6. **Permissions**: Make sure that your user account has the necessary permissions to run Chromium Snap. If you're experiencing issues with permissions, try launching Chromium with elevated privileges using `sudo`.

7. **Check System Requirements**: Ensure that your system meets the minimum requirements to run Chromium Snap. Insufficient system resources or incompatible hardware may prevent Chromium from starting properly.

8. **Check for Conflicting Software**: Verify that there are no conflicting software or extensions that could be interfering with Chromium's operation. Disable any browser extensions or third-party software that may be causing conflicts.

9. **Check Snapcraft Forum or Support**: If none of the above steps resolve the issue, consider seeking help from the Snapcraft forum or support channels. Other users or developers may be able to provide assistance based on your specific issue.

By following these troubleshooting steps, you should be able to diagnose and resolve the issue preventing Chromium Snap from starting on your system.

Open a terminal [ctl+alt+t] :
sudo snap refresh chromium
This will update your Chromium browser.

sudo apt update && sudo apt upgrade
This will check for updates for the entire OS.

sudo snap refresh
This will update all snaps.