Exception: Missing attribute gtGTID from CAS

[sentry-io]

Sentry Issue: APIARY-C5

Exception: Missing attribute gtGTID from CAS
  File "/app/Traits/CreateOrUpdateCASUser.php", line 52, in App\Http\Middleware\CASAuthenticate::createOrUpdateCASUser
    throw new Exception('Missing attribute '.$attr.' from CAS');
  File "/app/Http/Middleware/CASAuthenticate.php", line 81, in App\Http\Middleware\CASAuthenticate::handle
    $user = $this->createOrUpdateCASUser();
  File "/app/Http/Middleware/Sentry.php", line 58, in App\Http\Middleware\Sentry::handle
    return $next($request);
  File "/public/index.php", line 51
    $response = $kernel->handle(
...
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