String [summaryof,core] is deprecated. Either you should no longer be using that string, or the string has been incorrectly deprecated, in which case you should report this as a bug. Please refer to https://moodledev.io/general/projects/api/string-deprecation

• line 395 of \lib\classes\string_manager_standard.php: call to debugging()
• line 7012 of \lib\moodlelib.php: call to core_string_manager_standard->get_string()
• line 58 of \course\info.php: call to get_string()