One cannot prove a negative. All that can be done is to report a lack of evidence for the positive-cappy
If one's position is that it is NOT divinely inspired, they do not have
to present evidence. The "evidence" of a negative is by definition a
lack of evidence.
In the USA, a person continues free on his way until he is detained. Let's say a peace officer stops a motorist and issues him a summons for not stopping at a stop sign. At the trial, the prosecutor kindly informs the Defendant:" I am sorry Sir, 'one cannot prove a negative,' you are going to have to prove that you did stop at the stop sign. We are very sorry for that. "Further, we do not have to present evidence because the evidence of a negative is by definition a lack of evidence." Funny Stuff.
"The Bible is NOT Error-Free"
If you mean that the Bible is not inspired, then God is not the author.
If the Bible is inspired, then you are accountable to God for your conduct.
If you do not like what the Bible says, does not invalidate it from being inspired.
Not proving that the Bible is inspired does not invalidate it from being inspired.
A federal reserve note circulates and is legal tender. The US treasury is the author until the note is invalidated or shown to be authored by someone else, counterfeit. It has not been shown that the Bible is not error free, counterfeit.