Slim Application Error

The application could not run because of the following error:

Details

Type: ErrorException
Code: 8
Message: Trying to access array offset on value of type bool
File: /fod/coopenae/campus/app/models/cursos_model.php
Line: 277

Trace

#0 /fod/coopenae/campus/app/models/cursos_model.php(277): Slim\Slim::handleErrors()
#1 /fod/coopenae/campus/app/controllers/cursos_controller.php(77): CursosModel->cursosRelacionados()
#2 /fod/coopenae/campus/app/controllers/base_controller.php(61): CursosController->_curso()
#3 /fod/coopenae/campus/app/controllers/base_controller.php(83): BaseController->__construct()
#4 /fod/coopenae/campus/libs/routes_helper.php(90): BaseController::getInstance()
#5 /fod/coopenae/campus/libs/routes_helper.php(78): Router\Helper::dispatchRequest()
#6 [internal function]: Router\Helper::Router\{closure}()
#7 /fod/coopenae/campus/vendor/slim/slim/Slim/Route.php(468): call_user_func_array()
#8 /fod/coopenae/campus/vendor/slim/slim/Slim/Slim.php(1355): Slim\Route->dispatch()
#9 /fod/coopenae/campus/vendor/slim/slim/Slim/Middleware/Flash.php(85): Slim\Slim->call()
#10 /fod/coopenae/campus/vendor/slim/slim/Slim/Middleware/MethodOverride.php(92): Slim\Middleware\Flash->call()
#11 /fod/coopenae/campus/vendor/slim/slim/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\MethodOverride->call()
#12 /fod/coopenae/campus/vendor/slim/slim/Slim/Slim.php(1300): Slim\Middleware\PrettyExceptions->call()
#13 /fod/coopenae/campus/app/config/bootstrap.php(34): Slim\Slim->run()
#14 /fod/coopenae/campus/index.php(24): AppBootstrap::init()
#15 /fod/coopenae/campus/index.php(28): MyApp::__init()
#16 {main}