public async Task <IActionResult> AcceptRequestJoin(int id) //groupuserId
        {
            var gMember = await _groupRepo.GroupMember(id);

            gMember.IsAccepted = true;
            try
            {
                await _groupRepo.AcceptRequestJoin(gMember);
            }
            catch (System.Exception)
            {
                throw;
            }

            return(RedirectToAction(nameof(Details), new { id = gMember.GroupId }));
        }