Database doesn't get created

[bartmaj]

Looks like you're missing 'await' in your Startup.cs

Should be:
public async void Configure(IApplicationBuilder app, IDatabaseInitializer databaseInitializer)
and
await databaseInitializer.Seed();

[ivanmariychuk]

When I do "await" like this I get exception:

An exception of type 'System.Data.SqlClient.SqlException' occurred in System.Private.CoreLib.ni.dll but was not handled in user code
Additional information: Invalid object name 'OpenIddictApplications'.