I am following the example here https://learn.microsoft.com/en-us/aspnet/core/fundamentals/configuration/?view=aspnetcore-8.0#bind-hierarchical-configuration-data-using-the-options-pattern, but I keep getting the error _options is not null here and an object reference is required for the non static member, field or property DBProvider.options

appsettings.json

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "Database": {
    "ConnectionString": "my connection stirng"
  }
}

    public class DatabaseConfig
    {
        public const string ConfigSection = "Database";

        public string ConnectionString { get; set; } = string.Empty;
    }

namespace Microsoft.Extensions.DependencyInjection
{
    public static class Configs
    {
        public static IServiceCollection RegisterConfigValues(this IServiceCollection services, IConfiguration config)
        {
            services.Configure<DatabaseConfig>(
                config.GetSection(DatabaseConfig.ConfigSection).GetSection("ConnectinString"));

            return services;
        }

    }
}

//Program.cs

var builder = WebApplication.CreateBuilder(args);

builder.Services
    .RegisterConfigValues(builder.Configuration);

//DBProvider.cs

    public class DBProvider
    {
        private readonly DatabaseConfig _options;

        public DBProvider(IOptions<DatabaseConfig> options)
        {
            _options = options.Value;
        }

        public static DbConnection GetConnection()
        {
            DbConnection connection = new SqlConnection(_options.ConnectionString); <------- Getting error here
            connection.Open();
            return connection;
        }
    }

I am getting error in the DBProvider.cs file GetConnection function