error in program

[Jeremy De Armond]

https://www.google.com/search?client=opera&q=why+can%27t+king+take+queen&sourceid=opera&ie=UTF-8&oe=UTF-8#:~:text=About%20412%2C000%2C000%20results,check%3F%20%2D%20Chess%20Forums

"the king can't get to the queen on his own, though, because the queen controls all the squares needed for the king to move right next to her. so the only way a king can take the opposing queen is if the queen moves right next to it".

Several times the opposing queen has taken something from my side who was right next to the king. When my turn the bot says illegal move. I'm not chess master but, it felt odd to me. So, of course I googled it and when this happens the king can attack. It's not checkmate as the computer thinks.  using normal variant.