Let's imagine a hypothetical business: Mistake Corp. Mistake Corp makes a lot of mistakes, and as it turns out, the reason they make these mistakes is typically the same. 90% of the time Mistake Corp makes a mistake, it's because of misinformation. I suppose misinformation is the opposite of a linchpin for Mistake Corp.
I'd like to be able to use the word like so: "Misinformation is the [anti-linchpin] of Mistake Corp"
What non-ambiguous word, other than "anti-linchpin", can I use to describe something that is a frequent cause for mistakes to those who aren't as English-savvy?