Явное преобразование существует, когда я пытаюсь сгруппировать с помощью entity framework

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привет,
я пытаюсь сгруппировать с помощью entity framework после фильтрации (предложение Where)

но эта ошибка появляется :

Cannot implicitly convert type 'System.Linq.IQueryable<dataObjects.CLSPeopleActivities>' to 'System.Linq.IQueryable<view_people_history>'. An explicit conversion exists (are you missing a cast?)

около :

.Select(grp => new CLSPeopleActivities
                {
                    ID = grp.Key.PeopleID,
                    Name = grp.Key.pepole_Name,
                    Count = grp.Count(),
                    Amount = grp.Sum(f => f.NetValue),
                    Amount_Curr = grp.Sum(f => f.NetValue).ToString() + " " + currency,
                    PercentOfTotal_Count = (grp.Count() / sTotalCount) * 100,
                    PercentOfTotal_Amount = (grp.Sum(f => f.NetValue) / sTotalAmount) * 100,
                    PercentOfTotal_Count_perc  = ((grp.Count() / sTotalCount) * 100).ToString() + "%",
                    PercentOfTotal_Amount_perc = ((grp.Sum(f => f.NetValue) / sTotalAmount) * 100).ToString() + "%",
                });

Что я уже пробовал:

var Query = DB1.view_people_history.Where(u=> u.PeopleID != 0);

            // Filter With Date
            if (checkDate.Checked)
            {
                Query = Query.Where(u => u.Opdate >= From && u.Opdate <= To);
            }
            
            // Branchs
            if (checkBranch.Checked && branchids.Count() > 0) { Query = Query.Where(u => branchids.Contains(u.BranchID)); }

            // Exclude the main account
            if (checkOperation.Checked) { Query = Query.Where(u => !PeopleMainAccounts.Contains(u.PeopleID)); }

            // Filter With Operation Type
            switch (OpTypeInput.EditValue)
            {
                case "purchases":
                    Query = Query.Where(u => u.OpType == "PURCHASES");
                    break;

                case "sales":
                    Query = Query.Where(u => u.OpType == "SALES");
                    break;

                case "rpurchases":
                    Query = Query.Where(u => u.OpType == "RETURNED_PURCHASES");
                    break;

                case "rsales":
                    Query = Query.Where(u => u.OpType == "RETURNED_SALES");
                    break;
            }

            // get Totals
            int sTotalCount = Query.Count();
            decimal sTotalAmount = Query.Sum(s => s.NetValue.Value);
            string currency = CurrencyInfo.currencyShortcut();
            // Group
            Query = Query.GroupBy(s => new  
                {
                    s.PeopleID,
                    s.pepole_Name
                })
                .Select(grp => new CLSPeopleActivities
                {
                    ID = grp.Key.PeopleID,
                    Name = grp.Key.pepole_Name,
                    Count = grp.Count(),
                    Amount = grp.Sum(f => f.NetValue),
                    Amount_Curr = grp.Sum(f => f.NetValue).ToString() + " " + currency,
                    PercentOfTotal_Count = (grp.Count() / sTotalCount) * 100,
                    PercentOfTotal_Amount = (grp.Sum(f => f.NetValue) / sTotalAmount) * 100,
                    PercentOfTotal_Count_perc  = ((grp.Count() / sTotalCount) * 100).ToString() + "%",
                    PercentOfTotal_Amount_perc = ((grp.Sum(f => f.NetValue) / sTotalAmount) * 100).ToString() + "%",
                });

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