( ! ) Fatal error: Uncaught TypeError: Canvas\FrontendFramework\Instructors\AbstractInstructor::getAvtar(): Return value must be of type string, none returned in /var/www/dynamic/courses.devroc.nl/src/Instructors/AbstractInstructor.php:22 Stack trace: #0 /var/www/dynamic/courses.devroc.nl/vendor/twig/twig/src/Extension/CoreExtension.php(1909): Canvas\FrontendFramework\Instructors\AbstractInstructor->getAvtar() #1 /var/www/dynamic/courses.devroc.nl/vendor/twig/twig/src/Environment.php(420) : eval()'d code(61): Twig\Extension\CoreExtension::getAttribute() #2 /var/www/dynamic/courses.devroc.nl/vendor/twig/twig/src/Template.php(402): __TwigTemplate_3e9bfc0195c5290abb7d8bd864568d6e->doDisplay() #3 /var/www/dynamic/courses.devroc.nl/vendor/twig/twig/src/Environment.php(420) : eval()'d code(99): Twig\Template->yield() #4 /var/www/dynamic/courses.devroc.nl/vendor/twig/twig/src/Template.php(402): __TwigTemplate_70579709f36ebf9cf275d28ad331c882->doDisplay() #5 /var/www/dynamic/courses.devroc.nl/vendor/twig/twig/src/Template.php(358): Twig\Template->yield() #6 /var/www/dynamic/courses.devroc.nl/vendor/twig/twig/src/Template.php(373): Twig\Template->display() #7 /var/www/dynamic/courses.devroc.nl/vendor/twig/twig/src/TemplateWrapper.php(51): Twig\Template->render() #8 /var/www/dynamic/courses.devroc.nl/src/Template.php(492): Twig\TemplateWrapper->render() #9 /var/www/dynamic/courses.devroc.nl/modules/AbstractController.php(52): Canvas\FrontendFramework\Template->parse() #10 /var/www/dynamic/courses.devroc.nl/modules/Course/CourseController.php(59): Canvas\CModule\AbstractController->parse() #11 /var/www/dynamic/courses.devroc.nl/public_html/index.php(34): Canvas\CModule\Course\CourseController->run() #12 {main} Next Twig\Error\RuntimeError: An exception has been thrown during the rendering of a template ("Canvas\FrontendFramework\Instructors\AbstractInstructor::getAvtar(): Return value must be of type string, none returned") in "Course/Tabs/instructors.twig" at line 9. in /var/www/dynamic/courses.devroc.nl/modules/Course/Tabs/instructors.twig on line 9
( ! ) Twig\Error\RuntimeError: An exception has been thrown during the rendering of a template ("Canvas\FrontendFramework\Instructors\AbstractInstructor::getAvtar(): Return value must be of type string, none returned") in "Course/Tabs/instructors.twig" at line 9. in /var/www/dynamic/courses.devroc.nl/modules/Course/Tabs/instructors.twig on line 9
Call Stack
#TimeMemoryFunctionLocation
10.0000356776{main}( ).../index.php:0
20.0022426352Canvas\CModule\Course\CourseController->run( ).../index.php:34
30.0035480976Canvas\CModule\AbstractController->parse( $template = 'Course/course.twig', $data = ['course' => class Canvas\Course\Pdg { protected array $aTechnologies = [...]; private string ${Canvas\FrontendFramework\AbstractCourse}courseDirName = 'pdg' }, 'layout' => 'xcanvas', 'timer_visible' => FALSE, 'active_page' => 'instructors', 'frontpage_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'instructors' => class Canvas\FrontendFramework\Instructors\InstructorCollection { protected int $position = 0; protected array $array = [...] }, 'goalspage_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'instructors_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'active_instructors' => 'font-weight:bolder;', 'schedule' => class Canvas\FrontendFramework\Schedule { }] ).../CourseController.php:59
40.0035480976Canvas\FrontendFramework\Template->parse( $file = 'Course/course.twig', $data = ['course' => class Canvas\Course\Pdg { protected array $aTechnologies = [...]; private string ${Canvas\FrontendFramework\AbstractCourse}courseDirName = 'pdg' }, 'layout' => 'xcanvas', 'timer_visible' => FALSE, 'active_page' => 'instructors', 'frontpage_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'instructors' => class Canvas\FrontendFramework\Instructors\InstructorCollection { protected int $position = 0; protected array $array = [...] }, 'goalspage_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'instructors_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'active_instructors' => 'font-weight:bolder;', 'schedule' => class Canvas\FrontendFramework\Schedule { }] ).../AbstractController.php:52
50.0128697664Twig\TemplateWrapper->render( $context = ['styles' => ['block_container' => 'margin-top:20px;margin-bottom:20px;flex-shrink: 1;border-radius: .37rem;border:1px solid #eae6e5!important'], 'course' => class Canvas\Course\Pdg { protected array $aTechnologies = [...]; private string ${Canvas\FrontendFramework\AbstractCourse}courseDirName = 'pdg' }, 'layout' => 'xcanvas', 'timer_visible' => FALSE, 'active_page' => 'instructors', 'frontpage_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'instructors' => class Canvas\FrontendFramework\Instructors\InstructorCollection { protected int $position = 0; protected array $array = [...] }, 'goalspage_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'instructors_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'active_instructors' => 'font-weight:bolder;', 'schedule' => class Canvas\FrontendFramework\Schedule { }] ).../Template.php:492
60.0128697664Twig\Template->render( $context = ['styles' => ['block_container' => 'margin-top:20px;margin-bottom:20px;flex-shrink: 1;border-radius: .37rem;border:1px solid #eae6e5!important'], 'course' => class Canvas\Course\Pdg { protected array $aTechnologies = [...]; private string ${Canvas\FrontendFramework\AbstractCourse}courseDirName = 'pdg' }, 'layout' => 'xcanvas', 'timer_visible' => FALSE, 'active_page' => 'instructors', 'frontpage_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'instructors' => class Canvas\FrontendFramework\Instructors\InstructorCollection { protected int $position = 0; protected array $array = [...] }, 'goalspage_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'instructors_url' => class Hurah\Types\Type\Url { private ${Hurah\Types\Type\AbstractDataType}sValue = [...] }, 'active_instructors' => 'font-weight:bolder;', 'schedule' => class Canvas\FrontendFramework\Schedule { }] ).../TemplateWrapper.php:51