Upgrade PHP

If you need to upgrade PHP version, do the following:

1. Upgrade PHP to the new version.

2. Try to clear the cache using php artisan freescout:clear-cache console command or via https://your-freescout.com/tools.php script.

3. Now if FreeScout does no open showing an error manually delete all files from bootstrap/cache, /storage/framework/cache/data and /storage/framework/views and repeat step 2)