'Object reference not set to an instance of an object.' in .Net core mvc

I'm getting ‍Object reference not set to an instance of an object in following code

hbprint = await _vw_BPS.FindAsync(x => x.Id == id);

foreach (var hbs in hbprint.Vw_hcsp)          
{   
    var stock = await _vw_hcsp.FindAsync(x=> x.HId == id);
          
    var svm= new Vw_hcsp
    {
        HId = stock.HId,
        HBLContainerId = stock.HBLContainerId,
        Chassis_No = stock.Chassis_No,
        ContainerNo = stock.ContainerNo,
        Seal_No = stock.Seal_No,
        Vehicle_Model = stock.Vehicle_Model,
        Gross_Weight_Stock = stock.Gross_Weight_Stock,
        Volume_Stock = stock.Volume_Stock
     };
}