Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in /srv/web/ethikas.eu/htdocs/static/smarty/templates/f9feabe1a8521b9bbf24dd751bc3e138e07eb19f_0.file.learning-platform_controller.tpl.php:70 Stack trace: #0 /srv/web/ethikas.eu/htdocs/static/smarty/templates/f9feabe1a8521b9bbf24dd751bc3e138e07eb19f_0.file.learning-platform_controller.tpl.php(70): array_column() #1 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_64c8d7a0565260_34471916() #2 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_template_compiled.php(114): Smarty_Template_Resource_Base->getRenderedTemplateCode() #3 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_internal_template.php(216): Smarty_Template_Compiled->render() #4 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_internal_template.php(385): Smarty_Internal_Template->render() #5 /srv/web/ethikas.eu/htdocs/static/smarty/templates/7833799a991a07cb6a02bec2979d3c3038401572_0.file.view_html.tpl.php(39): Smarty_Internal_Template->_subTemplateRender() #6 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_template_resource_base.php(123): content_64c8d935bc5b77_57131187() #7 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_template_compiled.php(114): Smarty_Template_Resource_Base->getRenderedTemplateCode() #8 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_internal_template.php(216): Smarty_Template_Compiled->render() #9 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_internal_templatebase.php(232): Smarty_Internal_Template->render() #10 /srv/web/ethikas.eu/htdocs/static/smarty/libs/sysplugins/smarty_internal_templatebase.php(134): Smarty_Internal_TemplateBase->_execute() #11 /srv/web/ethikas.eu/htdocs/static/includes/ClassPage.php(455): Smarty_Internal_TemplateBase->display() #12 /srv/web/ethikas.eu/htdocs/index.php(30): ClassPage->displayPage() #13 {main} thrown in /srv/web/ethikas.eu/htdocs/static/smarty/templates/f9feabe1a8521b9bbf24dd751bc3e138e07eb19f_0.file.learning-platform_controller.tpl.php on line 70