Installed and did cleanup. 500 error with this debug

Code:
[17-May-2025 14:26:37 America/Chicago] PHP Fatal error:  Uncaught Error: Undefined constant "ABUSEIPDB_HIGH_SCORE_CACHE_ENABLED" in /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php:222Stack trace:
#0 /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php(22): abuseipdb_observer->checkAbusiveIP()
#1 /home/MY_USER/public_html/includes/classes/traits/NotifierManager.php(107): abuseipdb_observer->update(Object(notifier), 'NOTIFY_HTML_HEA...', 'index', 'MY_TEMPLATE', NULL, NULL, NULL, NULL, NULL, NULL, NULL)
#2 /home/MY_USER/public_html/includes/templates/MY_TEMPLATE/common/html_header.php(19): base->notify('NOTIFY_HTML_HEA...', 'index', 'MY_TEMPLATE')
#3 /home/MY_USER/public_html/index.php(48): require('/home/MY_USER/...')
#4 {main}
  thrown in /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php on line 222


[17-May-2025 14:26:37 America/Chicago] Request URI: /, IP address: 123.234.134.255
--> PHP Fatal error: Uncaught Error: Undefined constant "ABUSEIPDB_HIGH_SCORE_CACHE_ENABLED" in /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php:222
Stack trace:
#0 /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php(22): abuseipdb_observer->checkAbusiveIP()
#1 /home/MY_USER/public_html/includes/classes/traits/NotifierManager.php(107): abuseipdb_observer->update(Object(notifier), 'NOTIFY_HTML_HEA...', 'index', 'MY_TEMPLATE', NULL, NULL, NULL, NULL, NULL, NULL, NULL)
#2 /home/MY_USER/public_html/includes/templates/MY_TEMPLATE/common/html_header.php(19): base->notify('NOTIFY_HTML_HEA...', 'index', 'MY_TEMPLATE')
#3 /home/MY_USER/public_html/index.php(48): require('/home/MY_USER/...')
#4 {main}
  thrown in /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php on line 222.


[17-May-2025 14:26:37 America/Chicago] Request URI: /, IP address: 123.234.134.255
--> PHP Fatal error: Uncaught Error: Undefined constant "ABUSEIPDB_HIGH_SCORE_CACHE_ENABLED" in /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php:222
Stack trace:
#0 /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php(22): abuseipdb_observer->checkAbusiveIP()
#1 /home/MY_USER/public_html/includes/classes/traits/NotifierManager.php(107): abuseipdb_observer->update(Object(notifier), 'NOTIFY_HTML_HEA...', 'index', 'MY_TEMPLATE', NULL, NULL, NULL, NULL, NULL, NULL, NULL)
#2 /home/MY_USER/public_html/includes/templates/MY_TEMPLATE/common/html_header.php(19): base->notify('NOTIFY_HTML_HEA...', 'index', 'MY_TEMPLATE')
#3 /home/MY_USER/public_html/index.php(48): require('/home/MY_USER/...')
#4 {main}
  thrown in /home/MY_USER/public_html/zc_plugins/AbuseIPDB/v4.0.0/catalog/includes/classes/observers/abuseipdb_observer.php on line 222.