Slim Application Error

The application could not run because of the following error:

Details

Type: ErrorException
Code: 8
Message: Trying to get property of non-object
File: /app/sites/hatiman/datasource.class.php
Line: 980

Trace

#0 /app/sites/hatiman/datasource.class.php(980): Slim\Slim::handleErrors(8, 'Trying to get p...', '/app/sites/hati...', 980, Array)
#1 /app/sites/hatiman/index.php(361): DataSource->article3()
#2 [internal function]: {closure}()
#3 /app/sites/hatiman/lib/Slim-2.6.2/Slim/Route.php(468): call_user_func_array(Object(Closure), Array)
#4 /app/sites/hatiman/lib/Slim-2.6.2/Slim/Slim.php(1357): Slim\Route->dispatch()
#5 /app/sites/hatiman/lib/Slim-2.6.2/Slim/Middleware/Flash.php(85): Slim\Slim->call()
#6 /app/sites/hatiman/lib/Slim-2.6.2/Slim/Middleware/MethodOverride.php(92): Slim\Middleware\Flash->call()
#7 /app/sites/hatiman/lib/Slim-2.6.2/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\MethodOverride->call()
#8 /app/sites/hatiman/lib/Slim-2.6.2/Slim/Slim.php(1302): Slim\Middleware\PrettyExceptions->call()
#9 /app/sites/hatiman/index.php(577): Slim\Slim->run()
#10 {main}