Page: *moodleinstance*.de/lib/ajax/service.php?info=core_fetch_notifications
#0  local_mbs\performance\debugger::print_debug_backtrace() called at [/srv/shared/moodle-dlb/html/lib/moodlelib.php:1708]
#1  get_cache_flags() called at [/srv/shared/moodle-dlb/html/lib/accesslib.php:5607]
#2  context->reload_if_dirty() called at [/srv/shared/moodle-dlb/html/lib/accesslib.php:635]
#3  has_capability() called at [/srv/shared/moodle-dlb/html/lib/accesslib.php:1913]
#4  is_viewing() called at [/srv/shared/moodle-dlb/html/lib/moodlelib.php:2840]
#5  require_login() called at [/srv/shared/moodle-dlb/html/lib/externallib.php:481]
#6  external_api::validate_context() called at [/srv/shared/moodle-dlb/html/lib/external/externallib.php:549]
#7  core_external::fetch_notifications() called at [/srv/shared/moodle-dlb/html/lib/externallib.php:228]
#8  external_api::call_external_function() called at [/srv/shared/moodle-dlb/html/lib/ajax/service.php:59]