Thanks for welcoming me! Here is the immediate context of the missing line. The conversation continues as normal afterward and I was able to recruit him without any noticeable issues.
Two separate issues: 1. Zahua seems to be missing a line of dialogue during his introduction as seen here. 2. "The Wax Maker" Stronghold adventure seems to display the text for a different adventure and "No events currently pending" probably shouldn't display while an event is currently pending.