@flexy2ky , Hi I have also faced many difficulties on upgrading v13 to v14.
So, Today I had a fresh installation of v14 and it worked great following this guide [Guide] How to install ERPNext v14 on Linux Ubuntu (step-by-step instructions)
After installation I have backed up my old v13 site database and restored on this new server and migrated the site. Every step shows “Success”. After the restoration no data like items, stock even Chart of Account is not showing any old data.
Please guide what can I do now?