The module lightboxgallery does not define the standard capability mod/lightboxgallery:addinstance
line 3436 of /course/lib.php: call to debugging()
line 1899 of /course/lib.php: call to course_allowed_module()
line 1774 of /course/lib.php: call to get_module_metadata()
line 561 of /course/format/renderer.php: call to print_section_add_menus()
line 52 of /course/format/topics/format.php: call to format_section_renderer_base->print_multiple_section_page()
line 245 of /course/view.php: call to require()

https://github.com/netspotau/moodle-mod_lightboxgallery