Izdihar,Not sure if you solved this. I had the same issue and solved it by going to command prompt (cmd) and typing:
C:\Program Files\Microsoft SQL Server\140\Tools\Binn\sqllocaldb create blueprismlocaldbC:\Program Files\Microsoft SQL Server\140\Tool...
I solved the issue myself.The local db was not creating so had to go with:C:\Program Files\Microsoft SQL Server\140\Tools\Binn\sqllocaldb create blueprismlocaldband thenC:\Program Files\Microsoft SQL Server\140\Tools\Binn\sqllocaldb start blueprismlo...
Chris,
I came across the same error
"BluePrism.DatabaseInstaller.DatabaseInstallerException: Unable to determine whether database exists - A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server...