Says I got my log invalidated because of too many external buffs but can't see why

Warcraft Logs
1

I see I had PI on me but only 3 times where as one of the top logs for that fight I see people with 4 PI’s and it’s still good. Maybe I am missing something here is the log. https://www.warcraftlogs.com/reports/4pqCMJHAV3mh1aGK?fight=75&type=damage-done&source=859