add general troubleshooting steps

Author: timacdonald

UPGRADE.md

@@ -328,6 +328,13 @@ You may start the SSR server using `node`:
 node storage/ssr/ssr.js
 ```
 
+### Troubleshooting
+
+If you have followed all of the above steps, but are still having issues you should try the following steps:
+
+- Try running `php artisan view:clear` to clear any compiled view assets.
+- If your development web server is running on HTTPS, check out the ["Working With A Secure Development Server"](https://laravel.com/docs/9.x/vite#working-with-a-secure-development-server) section of the documentation.
+
 ### Wrapping up
 
 You should now be able to build your assets using `dev` command. This will also invoke the Vite server and Vite will watch for file changes: