I tried everything please help
Error code 8 indicates the database file is read-only, but it should be writable for a connection to succeed.
Go to your project folder, look into the .urc directory for a .sqlite file and make sure it doesn’t have any readonly attribute set (on either any of the files there or the .urc folder).
Is the .urc directory read only? Or the project directory? Or are there any Windows permissions preventing write access?
How I can check windows permission?
@OleszykYt could you try launching UEFN as an administrator in Windows?