Is it sufficient for the worshipper to recite Al-Fatihah to himself if the Imam makes a mistake?

If the Imam's mistake in recitation does not change the meaning or invalidate the recitation, then his prayer and the prayer of the congregants are valid. However, if the mistake alters the meaning, then it is not permissible to follow him, unless the mistake is difficult to avoid, such as with letters that are close in pronunciation.