asp.net core error with mysql

The call is ambiguous between the following methods or properties: 'Microsoft.EntityFrameworkCore.MySQLDbContextOptionsExtensions.UseMySQL(Microsoft.EntityFrameworkCore.DbContextOptionsBuilder, string, System.Action)' and 'Microsoft.EntityFrameworkCore.MySQLDbContextOptionsExtensions.UseMySQL(Microsoft.EntityFrameworkCore.DbContextOptionsBuilder, string, System.Action)'

My code is

public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContextPool(options => options.UseMySQL(_config.GetConnectionString("DefaultConnection")));
            services.AddMvc();
            
        }