Get Requests Error :
Object of type ‘System.Linq.EnumerableQuery1[Microsoft.AspNetCore.OData.Query.Wrapper.SelectAllAndExpand1[Core.Objects.Result1[Core.Entities.Invoice]]]' cannot be converted to type 'System.Linq.IQueryable1[Core.Objects.Result`1[Core.Entities.Invoice]]’

Solution :

I found reason that this error occurred and I corrected it
In Odata if you register enablequery globbaly such this

Services .AddMvc() .AddControllers() .AddOData(options => options .AddRouteComponents(“odata”, OdataBuilder.GetEdmModel()) .EnableQueryFeatures(null) ).AddODataNewtonsoftJson();
you must dont use EnableQuery attribute before method

Before

type here

[EnableQuery]
[HttpGet]
public IActionResult Get()
{
        var Items = _unitOfWork.Set<TEntity>();
        return Ok(Items);
 }

After :

[HttpGet]
public IActionResult Get()
{
        var Items = _unitOfWork.Set<TEntity>();
        return Ok(Items);
 } 

Removing the [EnableQuery] Fixed the problems