database of serenity didnt work

[samaremad]

hi everyone
now i create new project with serenity and didn't add anything yet just want it run with its default component
i get error the they cannot find the database
how can i solve this error

[VictorTomaili]

It's impossible to know your database connection string for us. Please ensure you can connect your database with other applications like SSMS etc. Then ensure your connection string is valid.

[samaremad]

no dear i didnt add any database
this error for database of serenity in local server
it is dosnt work

and this is the connection string in web config

<connectionStrings> <add name="Default" connectionString="Data Source=(LocalDb)\MSSqlLocalDB; Initial Catalog=Serene5_Default_v1; Integrated Security=True" providerName="System.Data.SqlClient" /> </connectionStrings>

[VictorTomaili]

Because you didn't have a local database installed in your computer. Search MsSql LocalDb on google and install.

[samaremad]

i make sure that local database is installed and founded in the system but the same problem still appear i think it is need some configuration in the visual studio
what should i do

[VictorTomaili]

search localdb and how to use it on google