[Solved] SQL Server Error: The conversion of a varchar data type to a datetime data type resulted in an out-of-range value

Hi

i am trying to compare date and show the message, but when i execute below sql query i am getting an error. 

Msg 50000, Level 16, State 3, Procedure dbo.uspLinkExpirycheck, Line 40 [Batch Start Line 9] The conversion of a varchar data type to a datetime data type resulted in an out-of-range value.

Completion time: 2022-04-25T10:31:21.8754227+05:30

start date value=2022-04-05 08:45:03.437 

endate date value ==getutcdate()  2022-04-25 07:49:17.633

USE [PatientManagementDB]
GO
/****** Object:  StoredProcedure [dbo].[uspLinkExpirycheck]    Script Date: 25-04-2022 10:27:16 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO


--exec [dbo].[uspLinkExpirycheck] '1BB26072-E551-4BC9-885C-9E337978AA5E'
ALTER PROCEDURE [dbo].[uspLinkExpirycheck] (
	@MedicalInfoId  VARCHAR(50)
	--,@otp NVARCHAR(10)
	)
AS
BEGIN
	DECLARE @Status BIT = 0;
	DECLARE @Msg VARCHAR(500);
	DECLARE @StartDate datetime, @EndDate datetime,@Datedif DATETIME

	SET NOCOUNT ON;

	BEGIN TRY
		

		IF (EXISTS (SELECT 1 FROM [dbo].[tblSendMedicalInfo] WITH(NOLOCK) WHERE MedicalInfoId = @MedicalInfoId))
		BEGIN
         set @startDate=( select [CreatedOn] from [tblSendMedicalInfo] where MedicalInfoId=@MedicalInfoId )
         set @EndDate= Getutcdate();
      SET @Datedif=(select convert(varchar(5),DateDiff(s, @startDate, @EndDate)/3600)+':'+convert(varchar(5),DateDiff(s, @startDate, @EndDate)%3600/60)+':'+convert(varchar(5),(DateDiff(s, @startDate, @EndDate)%60)) as [hh:mm:ss])
           IF(@Datedif< '22:59:59')
		   SELECT 1 AS STATUS ,'LINK VERIFIED!'
		   ELSE
		   SELECT 0 AS STATUS ,'Your Link has Expired Please check with Patient Name for the New Link!'	
		END
		ELSE
		BEGIN
			
			SELECT 0 AS STATUS ,'Details Not Found'
		END
	END TRY
	BEGIN CATCH
		SET @Msg = Error_message();
		DECLARE @ErrorSeverity INT = Error_severity();
		DECLARE @ErrorState INT = Error_state();

		RAISERROR (
				@Msg
				,@ErrorSeverity
				,@ErrorState
				);
	END CATCH	
END