Does the worshiper who responds to the imam invalidate his prayer if the imam makes a mistake in the Friday sermon?

Responding to the Imam during the sermon, or asking him about something in it, or requesting something from him, is not considered idle talk and is not forbidden. A man once came to the Prophet, peace and blessings be upon him, while he was delivering the Friday sermon and said: "O Messenger of Allah, wealth has perished, and the roads have been cut off, so supplicate to Allah to grant us rain." The Prophet, peace and blessings be upon him, responded to him and did not rebuke him. Therefore, there is no harm for someone who addresses the preacher and asks him for supplication or help, or corrects an error he has made.