Set GETDATE as a default parameter value in stored procedure in SQL Server

Error Conversion failed when converting date andor time from character string.

i have SP and date column type is date, i want to use current date in store procedure

i am not passing any value and i will not pass any value, i am using current date by using getdate()

Alter PROCEDURE Sp_Manual 
	-- Add the parameters for the stored procedure here
	@StartDate date =GETDATE,
	@Enddate   date =GETDATE
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;
 
    -- Insert statements for procedure here
	SELECT l.LocName AS Location, SUM(c.QTY) AS Expr1, SUM(c.IWeight) AS Weigth
	FROM ConIssuance AS c 
	INNER JOIN Location AS l ON c.LocID = l.LocID                       
	where C.EntryDate between @StartDate and @Enddate
	GROUP BY c.QTY, c.IWeight, l.LocName 
END
GO