I remember a YouTube channel that made a prophecy about California, he was an overzealous legalist guy dressed in some hoodie (imitating sackcloth). I think he's a real believer, he wasn't selling anything on his channel, he had a blog/site, preaching that Jesus cured him from suicidal depression, but he was stuck in this dark legalist understanding. Basically he prophesied a date when a natural disaster (I think earthquake), was to hit California. It didn't come to pass, but then he made a new video and CHANGED THE DATE to a new, future one. I called him out in the comments and probably many more did because later he removed the video (and channel).
A prophet of God doesn't "mishear it" or "get it wrong". It's better to be conservative and not tell every dream and vision. Because if it's a pressing matter, oh one should not be afraid, God will press you to speak so much that you will think that you must speak, or die.