Exception - Argument 1 passed to core_course_category::get_nearest_editable_subcategory() must be an instance of core_course_category, null given, called in [dirroot]/my/courses.php on line 67

Debug info:

Error code: generalexceptionmessage

Stack trace:

    line 3189 of /course/classes/category.php: TypeError thrown

    line 67 of /my/courses.php: call to core_course_category::get_nearest_editable_subcategory()

Exception - Call to a member function can_create_course() on null

Debug info:

Error code: generalexceptionmessage

Stack trace:

    line 415 of /blocks/myoverview/classes/output/main.php: Error thrown

    line 46 of /blocks/myoverview/classes/output/renderer.php: call to block_myoverview\output\main->export_for_template()

    line 488 of /lib/outputrenderers.php: call to block_myoverview\output\renderer->render_main()

    line 62 of /blocks/myoverview/block_myoverview.php: call to plugin_renderer_base->render()

    line 341 of /blocks/moodleblock.class.php: call to block_myoverview->get_content()

    line 235 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()

    line 1222 of /lib/blocklib.php: call to block_base->get_content_for_output()

    line 1280 of /lib/blocklib.php: call to block_manager->create_block_contents()

    line 685 of /lib/outputrenderers.php: call to block_manager->ensure_content_created()

    line 219 of /lib/mustache/src/Mustache/Context.php: call to core_renderer->standard_head_html()

    line 138 of /lib/mustache/src/Mustache/Context.php: call to Mustache_Context->findVariableInStack()

    line 31 of data/localcache/mustache/1647538853/boost/__Mustache_5d2c5b634f028cc9d1e1a83931c95cb2.php: call to Mustache_Context->findDot()

    line 13 of data/localcache/mustache/1647538853/boost/__Mustache_a1ebd1a6f202c9e6ea188176c7924985.php: call to __Mustache_5d2c5b634f028cc9d1e1a83931c95cb2->renderInternal()

    line 67 of /lib/mustache/src/Mustache/Template.php: call to __Mustache_a1ebd1a6f202c9e6ea188176c7924985->renderInternal()

    line 201 of /lib/outputrenderers.php: call to Mustache_Template->render()

    line 113 of /theme/boost/layout/drawers.php: call to renderer_base->render_from_template()

    line 1472 of /lib/outputrenderers.php: call to include()

    line 1398 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()

    line 2951 of /lib/outputrenderers.php: call to core_renderer->header()

    line 390 of /lib/setuplib.php: call to core_renderer->fatal_error()

    line ? of unknownfile: call to default_exception_handler()