This error indicates that you've got a link beginning with try, start, join, or other such action-oriented verbs. The entire regular expression is kind of a beast:
To avoid flagging this rule, make sure none of your URLs fall victim to this. Unfortunately, that's... very difficult in many cases, as this rule is prone to a lot of false positives. Using a link re-writer or proxy (such as Buttondown's) will help.
Buttondown is the last email platform you’ll switch to.