Page header already printed, can not add skip links any more, code needs to be fixed.
line 1044 of /public/lib/classes/output/requirements/page_requirements_manager.php: call to debugging()
line 387 of /public/lib/classes/output/requirements/page_requirements_manager.php: call to core\output\requirements\page_requirements_manager->skip_link_to()
line 1675 of /public/lib/classes/output/requirements/page_requirements_manager.php: call to core\output\requirements\page_requirements_manager->init_requirements_data()
line 454 of /public/theme/edumy/classes/output/core_renderer.php: call to core\output\requirements\page_requirements_manager->get_head_code()
line 219 of /public/lib/mustache/src/Mustache/Context.php: call to theme_edumy\output\core_renderer->standard_head_html()
line 138 of /public/lib/mustache/src/Mustache/Context.php: call to Mustache_Context->findVariableInStack()
line 37 of /home/mopste353/moodledata_mdl4/localcache/mustache/1774525000/edumy/__Mustache_9988d5547725742ae8c343a524bb0c1b.php: call to Mustache_Context->findDot()
line 15 of /home/mopste353/moodledata_mdl4/localcache/mustache/1774525000/edumy/__Mustache_881baab3c07176f52ac4bf39f2aebd3d.php: call to __Mustache_9988d5547725742ae8c343a524bb0c1b->renderInternal()
line 66 of /public/lib/mustache/src/Mustache/Template.php: call to __Mustache_881baab3c07176f52ac4bf39f2aebd3d->renderInternal()
line 192 of /public/lib/classes/output/renderer_base.php: call to Mustache_Template->render()
line 49 of /public/theme/edumy/layout/ccn_incourse.php: call to core\output\renderer_base->render_from_template()
line 959 of /public/lib/classes/output/core_renderer.php: call to include()
line 875 of /public/lib/classes/output/core_renderer.php: call to core\output\core_renderer->render_page_layout()
line 87 of /public/mod/page/view.php: call to core\output\core_renderer->header()
