Hi @瞑 凌
There are many reasons for the specified path not found error, such as invalid path in the path directory, wrong path in the path environment, software damage, etc. As Erland said, you can check the logs to locate specific problems.
You can also try uninstalling SQL Server and reinstalling it. You can refer to this link: https://social.msdn.microsoft.com/Forums/sqlserver/en-US/3656118e-f2c3-42ab-bc1d-dfecd338c9c6/can39t-install-sql-server-2019-express-edition-exit-code-decimal-2147467259error?forum=sqlexpress.
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Best regards,
Aniya