To stop any wild guessing it is always pertinent I find to provide all info to help that what may lead up to the question in turn.
On another forum I frequent some one was concerned about a smoking lithium battery and asked reasons for why and is it normal. The answer simply was no, It took several more posts of prompting them to what may have occurred to give proper advice.
Eventually the fool said he and his bike both fell in to a canal, originally omitting the most important factor.
It doesn't help anyone in whatever sphere of asking what happened when vital info may be missing and why some folks don't bother to answer.