String [grade,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://docs.moodle.org/dev/String_deprecation
line 394 of /lib/classes/string_manager_standard.php: call to debugging()
line 7278 of /lib/moodlelib.php: call to core_string_manager_standard->get_string()
line 2027 of /mod/simplecertificate/locallib.php: call to get_string()
line 105 of /mod/simplecertificate/view.php: call to simplecertificate->view_issued_certificates()
String [grade,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://docs.moodle.org/dev/String_deprecation line 394 of /lib/classes/string_manager_standard.php: call to debugging() line 7278 of /lib/moodlelib.php: call to core_string_manager_standard->get_string() line 2027 of /mod/simplecertificate/locallib.php: call to get_string() line 105 of /mod/simplecertificate/view.php: call to simplecertificate->view_issued_certificates()