This may be random but do you own an Insta360 camera? The Premiere plug-in that comes with the Insta360 Studio seems to be the reason for my crash. If this sounds like you, I’ll refer you to this guide. https://www.insta360.com/support/supportcourse?post_id=10354
You were the only person I found that had the same problem as me. Turns out, the file is actually called “insv” not “vsni” like AE says. If you google “insv after effects” you’ll find a bunch of people with the same problem.
Hope this helped mate!