情相學進階課程- Blank

Warning (2): Attempt to read property "name" on false [ROOT/templates/Topics/view.php, line 820]
Code Context
<?php 
                <h5 class="text-center"><i class="fas fa-video"></i> <span class="ps-2"><?php echo h($topic_material->name->tc); ?></span></h5>
<?php 
include - ROOT/templates/Topics/view.php, line 820
Cake\View\View::_evaluate() - CORE/src/View/View.php, line 1176
Cake\View\View::_render() - CORE/src/View/View.php, line 1133
Cake\View\View::render() - CORE/src/View/View.php, line 764
Cake\Controller\Controller::render() - CORE/src/Controller/Controller.php, line 760
Cake\Controller\Controller::invokeAction() - CORE/src/Controller/Controller.php, line 546
Cake\Controller\ControllerFactory::handle() - CORE/src/Controller/ControllerFactory.php, line 140
Cake\Controller\ControllerFactory::invoke() - CORE/src/Controller/ControllerFactory.php, line 115
Cake\Http\BaseApplication::handle() - CORE/src/Http/BaseApplication.php, line 317
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 77
Cake\Http\Middleware\CsrfProtectionMiddleware::process() - CORE/src/Http/Middleware/CsrfProtectionMiddleware.php, line 174
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 73
Cake\Routing\Middleware\RoutingMiddleware::process() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 161
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 73
Cake\Routing\Middleware\AssetMiddleware::process() - CORE/src/Routing/Middleware/AssetMiddleware.php, line 68
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 73

Warning (2): Attempt to read property "tc" on null [ROOT/templates/Topics/view.php, line 820]
Code Context
<?php 
                <h5 class="text-center"><i class="fas fa-video"></i> <span class="ps-2"><?php echo h($topic_material->name->tc); ?></span></h5>
<?php 
include - ROOT/templates/Topics/view.php, line 820
Cake\View\View::_evaluate() - CORE/src/View/View.php, line 1176
Cake\View\View::_render() - CORE/src/View/View.php, line 1133
Cake\View\View::render() - CORE/src/View/View.php, line 764
Cake\Controller\Controller::render() - CORE/src/Controller/Controller.php, line 760
Cake\Controller\Controller::invokeAction() - CORE/src/Controller/Controller.php, line 546
Cake\Controller\ControllerFactory::handle() - CORE/src/Controller/ControllerFactory.php, line 140
Cake\Controller\ControllerFactory::invoke() - CORE/src/Controller/ControllerFactory.php, line 115
Cake\Http\BaseApplication::handle() - CORE/src/Http/BaseApplication.php, line 317
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 77
Cake\Http\Middleware\CsrfProtectionMiddleware::process() - CORE/src/Http/Middleware/CsrfProtectionMiddleware.php, line 174
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 73
Cake\Routing\Middleware\RoutingMiddleware::process() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 161
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 73
Cake\Routing\Middleware\AssetMiddleware::process() - CORE/src/Routing/Middleware/AssetMiddleware.php, line 68
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 73