How to use Identity with PostgreSQL?

I have added Microsoft.AspNetCore.Identity.EntityFrameworkCore via nuget.

StartUp

public void ConfigureServices(IServiceCollection services)
{
    //Add PostgreSQL support
    services.AddEntityFrameworkNpgsql()
        .AddDbContext<StoreDbContext>(options =>
            options.UseNpgsql(Configuration["Data:StoreDbContext:ConnectionString"]));
    // Add framework services.
    services.AddMvc();

    services.AddIdentity<PostgreApp.Models.User, IdentityRole>()
            .AddEntityFrameworkStores<StoreDbContext>()
            .AddDefaultTokenProviders();

    // Add our PostgreSQL Repository
    services.AddTransient<IStoreRepository, StoreRepository>();
}

In StartUp' Configure I have added following:

app.UseIdentity();

This is my code:

 public class StoreDbContext: IdentityDbContext<User>
 {
    public StoreDbContext(DbContextOptions<StoreDbContext> options) : base(options)
    {
    }

    public DbSet<Store> Stores { get; set; }
    public DbSet<Company> Companies { get; set; }
    public DbSet<Department> Departments { get; set; }
    public DbSet<JobPost> JobPosts { get; set; }
    public DbSet<Candidate> Candidates { get; set; }
    public DbSet<CandidateCV> CandidateCVs { get; set; }
    public DbSet<Criterion> Criteria { get; set; }
    public DbSet<AssessmentStage> AssessmentStages { get; set; }
    public DbSet<AssessmentCriterion> AssessmentCriteria { get; set; }
    public DbSet<JobpostCv> JobpostCvs { get; set; }
}

Then I am getting this:

System.InvalidOperationException: Column Id of type text has ValueGenerated.OnAdd but no default value is defined at Microsoft.EntityFrameworkCore.Migrations.NpgsqlMigrationsSqlGenerator.ColumnDefinition(String schema, String table, String name, Type clrType, String type, Nullable1 unicode, Nullable1 maxLength, Boolean rowVersion, Boolean nullable, Object default Value, String defaultValueSql, String computedColumnSql, IAnnotatable annotatable, IModel model, MigrationCommandListBuilder builder) at Microsoft.EntityFrameworkCore.Migrations.MigrationsSqlGenerator.ColumnDefinition(AddColumnOperation operation, IModel model, MigrationCommandListBuilder builder) at Microsoft.EntityFrameworkCore.Migrations.MigrationsSqlGenerator.Generate(CreateTableOperation operation, IModel model, MigrationCommandListBuilder builder, Boolean terminate) at Microsoft.EntityFrameworkCore.Migrations.MigrationsSqlGenerator.Generate(CreateTableOperation operation, IModel model, MigrationCommandListBuilder builder) at Microsoft.EntityFrameworkCore.Migrations.MigrationsSqlGenerator.Generate(MigrationOperation operation, IModel model, MigrationCommandListBuilder builder) at Microsoft.EntityFrameworkCore.Migrations.MigrationsSqlGenerator.Generate(IReadOnlyList`1 operations, IModel model) at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.GenerateUpSql(Migration migration) at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration) at Microsoft.EntityFrameworkCore.Design.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType) at Microsoft.EntityFrameworkCore.Tools.Cli.DatabaseUpdateCommand.<>c__DisplayClass0_0.b__0()

at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[]

args) at Microsoft.EntityFrameworkCore.Tools.Cli.Program.Main(String[] args) Column Id of type text has ValueGenerated.OnAdd but no default value is defined

How do I solve this ?