wp-cron

We were investigating an issue on our site and it appears that the StopBadBots plugin is running > 45 times/minute and sometimes 2x per second and throwing a 504 error. Here is the output in the PHP-FPM, www-error.log:
o PHP Warning: Cannot modify header information – headers already sent by (output started at /var/app/current/httpdocs/wp-cron.php:28) in /var/app/current/httpdocs/wp-content/plugins/stopbadbots/functions/functions.php
o It looks like this might be the plugin that is responsible for calling wp-cron.php. The log above gets repeated multiple times per minute.

We are running Amazon Linux 2, PHP7.4.3.0.3.
Why is this happening? How do we fix it?

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