[Defender Pro] Defender is causing wordpress errors and my site to run extremely slowly

My website is running exceptionally slow and the wordpress error log lists multiple errors being thrown off by Defender. Specifically, this error is occurring over and over

[Sat May 11 17:55:51.235436 2019] [access_compat:error] [pid 3928494:tid 140389419824896] [client 148.72.48.216:53987] AH01797: client denied by server configuration: /home/cwssz9ao64nt/public_html/403.shtml, referer: https://benxt.org/wp-content/uploads/wp-defender/index.php