(Pro 14:33 KJV) Wisdom resteth in the heart of him that hath understanding: but that which is in the midst of fools is made known.
Always check your sources. My NASB from 1977 uses “bosom” for the “midst” of the KJV. Both are from the Hebrew word with the Strong’s number (7130). When I checked my software which ties the numbering in the NASB Updated the word is changed to “hearts” and gives a number of (7310). The word is okay. The reference is the kind of thing that the hand copied manuscripts were supposed to be susceptible to. Someone switched the numbers in the middle.
Is this an error in the Bible? No. It is a technical problem. Could it be serious? Only if you refuse to do your homework, keep your mind in gear and trust that there are answers.
So? Be responsible for your own spiritual growth and always be willing to check things out.