Class: Error:
Exception: Attempt to assign property "readerNum" on null
File=/var/www/loserhub/app/modules/frontend/controllers/GroupsController.php
Line=2154
#0 [internal function]: Loserhub\Frontend\Controllers\GroupsController->imagedetailAction('fd7748877a854ea...', 'c582cc04245df76...')
#1 [internal function]: Phalcon\Dispatcher\AbstractDispatcher->callActionMethod(Object(Loserhub\Frontend\Controllers\GroupsController), 'imagedetailActi...', Array)
#2 [internal function]: Phalcon\Dispatcher\AbstractDispatcher->dispatch()
#3 /var/www/loserhub/app/bootstrap_web.php(100): Phalcon\Mvc\Application->handle('/groups/imagede...')
#4 /var/www/loserhub/public/index.php(17): require('/var/www/loserh...')
#5 {main}