1. While manual installation need to give write permission to code/app/Http/routes.php ( Not required since version 1.10 )
2. Please check for the parameters while making the update, since we use API(Not needed We use GUI install method since 2.0.1)
3. PHP REQUIREMENT LINK : https://docs.faveohelpdesk.com/#software-requirements
4. Install without dummy data(Install dummy data keep unchecked) 
5. Timezone GMT -5:00 US/Eastern
6. Keep Date and time format Default i.e DD/MM/YYYY H:i:s
7. FCM_SERVER_KEY and FCM_SENDER_ID are default values from app/Http/Controllers/Installer/helpdesk/InstallController.php, we have kept them as is in .env file.