Web Api with EF Core - Controller HttpGet does not contain a definition for GetAwaiter()

Question

User379720387 posted

Attempting to set up a web api with EF Core. Scaffold was successful and have a Model folder with all Entities.

using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using BtClassLibrary;
using BtApi.Model;

namespace BtApi.Controllers
{
    [ApiController]
    [Route("api/[controller")]
    
    public class TransactionController: ControllerBase
    {
        private  readonly AppDbContext context;
        public TransactionController(AppDbContext context)
        {
            this.context = context;
        }

        [HttpGet]
        public async Task<ActionResult<List<TransactionModel>>> Get() => await context.Transactions.ToList();

    }
}

The highlighted area has the error message:

Severity Code Description Project File Line Suppression State

Error CS1061 'List<TransactionModel>' does not contain a definition for 'GetAwaiter' and no accessible extension method 'GetAwaiter' accepting a first argument of type 'List<TransactionModel>' could be found (are you missing a using directive or an assembly reference?) BtApi C:\Users\Robert\source\Repos\BtApi\Controllers\TransactionController.cs 24 Active

using System;
using System.Collections.Generic;
using System.Text;

namespace BtClassLibrary
{
    public class TransactionModel
    {
        public int TransactionId { get; set; }

        public int ClientId { get; set; }

        public int BillNo { get; set; }

        public bool IsBilled { get; set; }
        public string Service { get; set; }
        public decimal Charge { get; set; }
        public decimal Tax { get; set; }
        public DateTime TDate { get; set; }
        public DateTime BDate { get; set; }
        public bool IsPaid { get; set; }
    }
}

And AppDbContext

using Microsoft.EntityFrameworkCore;
using BtClassLibrary;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace BtApi
{
    public class AppDbContext: DbContext
    {
        public DbSet<TransactionModel> Transactions { get; set; } 
        
        public AppDbContext(DbContextOptions<AppDbContext> options) : base(options)
        {

        }
    }
}

I am lost.