public class IndexModel : PageModel
        {
            private readonly CrewLogContext _context;

            public IndexModel(CrewLogContext context)
            {
                _context = context;
            }
            [BindProperty]
            public IList<EntryLog> EntryLog { get;set; }
            public TeamMember TeamMember { get; set; }
     public async Task OnGetAsync(string id)
            {
                TeamMember = await _context.TeamMember.Include(x => x.Position).Include(p => p.Shift).FirstOrDefaultAsync(p => p.Id == id);


                EntryLog = await _context.EntryLog.Where(x => x.TeamMemberId== id)
                    .Include(e => e.Reason)
                    .Include(e => e.ReasonType).ToListAsync();
            }

@Html.Partial("_TeamMember",  Model.TeamMember)

@page
    @model WebCrewLog.Models.TeamMember

    @{
    }
    <h2></h2>
    <div class="panel panel-default">
        <div class="panel-body">

            <div class="row">
                <div class="col-lg-2">
    //Here is where I'm getting an error.
                    <img class="img-circle" src="@Url.Content(Model.PhotoID)" style="width: 80%; height: 80%" />
                </div>
                <div class="col-lg-5">
                    <p>
                        <label class="text-success">@Html.DisplayFor(model => model.FirstName)  @Html.DisplayFor(model => model.LastName)</label><br />
                        Hired Date:<label class="text-success">@Html.DisplayFor(model => model.HireDate)</label><br />
                    </p>
                </div>
                <div class="col-lge-5">
                    <p>
                        Position:<label class="text-success">@Html.DisplayFor(model => model.Position.Name)</label><br />
                        Shift: <label class="text-success">@Html.DisplayFor(model => model.Shift.Name)</label>
                    </p>
                </div>
            </div>
            <div class="row">
            </div>
        </div>
    </div>

NullReferenceException: Object reference not set to an instance of an object.
    WebCrewLog.Pages._TeamMember_Page+<ExecuteAsync>d__0.MoveNext() in _TeamMember.cshtml
    +
                    <img class="img-circle" src="@Url.Content(Model.PhotoID)" style="width: 80%; height: 80%" />