Problem with userclaim

public async Task<IActionResult> Create([Bind("PetId,PetName,PetAge")] Pet pet)
{
    var userId = User.Claims.First(c => c.Type == "UserID").Value;
    if (ModelState.IsValid)
    {
        var owner = await _context.Owner.FirstOrDefaultAsync(o => o.IdentityUserId == userId);
        if (owner == null)
        {
            return NotFound("Owner not found");
        }
        pet.OwnerId = owner.OwnerId;
        _context.Add(pet);
        await _context.SaveChangesAsync();
        return RedirectToAction(nameof(Index));
    }
    return View(pet);
}

public async Task<IActionResult> Create([Bind("PetId,PetName,PetAge")] Pet pet)
{
    var userId = User.Claims.First(c => c.Type == "UserID").Value;
    if (ModelState.IsValid)
    {
        var owner = await _context.Owner.FirstOrDefaultAsync(o => o.IdentityUserId == userId);
        if (owner == null)
        {
            return NotFound("Owner not found");
        }
        pet.OwnerId = owner.OwnerId;
        _context.Add(pet);
        await _context.SaveChangesAsync();
        return RedirectToAction(nameof(Index));
    }
    return View(pet);
}

 public async Task<IActionResult> Index()
 {
     var userId = User.Claims.First(c => c.Type == "UserID").Value; // Assuming "UserID" claim holds the identity user ID
     return View(await _context.Pet.Where(p => p.Owner.IdentityUserId == userId).ToListAsync());
 }

 public async Task<IActionResult> Index()
 {
     var userId = User.Claims.First(c => c.Type == "UserID").Value; // Assuming "UserID" claim holds the identity user ID
     return View(await _context.Pet.Where(p => p.Owner.IdentityUserId == userId).ToListAsync());
 }