First let us look at the Bible.Matthew 11:23And you Capernaum, which are exalted unto heaven, shall be brought down to hell: for if the mighty works, which have been done in Sodom, it would have remained until this day. Also I Peter 4:17 For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God ?
Back to our question: Can whole church go to hell ? Yes but it will take two failures. The failure or major error/s of the leaders and failure of the members to detect them.