Slim Application Error

The application could not run because of the following error:

Details

Type: ErrorException
Code: 8
Message: Trying to get property 'imagem' of non-object
File: /home/ibrac/www/templates/site/calendario.php
Line: 10

Trace

#0 /home/ibrac/www/templates/site/calendario.php(10): Slim\Slim::handleErrors(8, 'Trying to get p...', '/home/ibrac/www...', 10, Array)
#1 /home/ibrac/www/templates/site/template.php(256): require('/home/ibrac/www...')
#2 /home/ibrac/www/vendor/slim/slim/Slim/View.php(278): require('/home/ibrac/www...')
#3 /home/ibrac/www/vendor/slim/slim/Slim/View.php(255): Slim\View->render('site/template.p...', Array)
#4 /home/ibrac/www/vendor/slim/slim/Slim/View.php(243): Slim\View->fetch('site/template.p...', NULL)
#5 /home/ibrac/www/vendor/slim/slim/Slim/Slim.php(755): Slim\View->display('site/template.p...')
#6 /home/ibrac/www/src/routes/site/site-pt.php(313): Slim\Slim->render('site/template.p...', Array)
#7 [internal function]: {closure}('13', 'prowine-china-2...')
#8 /home/ibrac/www/vendor/slim/slim/Slim/Route.php(468): call_user_func_array(Object(Closure), Array)
#9 /home/ibrac/www/vendor/slim/slim/Slim/Slim.php(1355): Slim\Route->dispatch()
#10 /home/ibrac/www/vendor/slim/slim/Slim/Middleware/Flash.php(85): Slim\Slim->call()
#11 /home/ibrac/www/vendor/slim/slim/Slim/Middleware/MethodOverride.php(92): Slim\Middleware\Flash->call()
#12 /home/ibrac/www/vendor/slim/slim/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\MethodOverride->call()
#13 /home/ibrac/www/vendor/slim/slim/Slim/Slim.php(1300): Slim\Middleware\PrettyExceptions->call()
#14 /home/ibrac/www/index.php(7): Slim\Slim->run()
#15 {main}