After replacing the code, the following error code was generated...

Code:
[15-Jan-2021 20:28:10 America/Chicago] Request URI:  /XXXXX/index.php?cmd=notes&page=1&nID=8&action=edit, IP  address: XXXXX
#1  require(/XXXXX/notes.php) called at [/XXXXX/index.php:11]
--> PHP Warning: Use of undefined constant TEXT_INFO_NOTE_PRIORITY -  assumed 'TEXT_INFO_NOTE_PRIORITY' (this will throw an Error in a future  version of PHP) in /XXXXX/notes.php on line 425.