upgrade of version to 5.9.5

Hello Team,

I am new to password manager solution so looking for some leads.

After upgrading to version 5.9.5 , PM is not accessible.

Log from path E:\Logs\One Identity\Password Manager says as below

2021-08-04 00:00:27:190 E [3676:78] AuditingService.dll ServiceSyncTask.OnFail() >> Error occured during synchronization of index with added records from storage of product 02c5f92c-c8b7-4ac6-9cd8-9cc5d86e6c30..

Exception: EAF.Core.Storage.Sql.SqlStorageException: Failed to retrieve last record ID from storage. See inner exception for more details. --->
System.Data.SqlClient.SqlException: A network-related or instance-specific error occurred while establishing a connection to SQL Server.
The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider,
error: 40 - Could not open a connection to SQL Server) ---> System.ComponentModel.Win32Exception: The network path was not found
--- End of inner exception stack trace -

How can I find the SQL server details and where can I check the connection details?