Does the prayer of an Imam who recites verse (Ghafir 40) as "Then those will enter Paradise; they will not be provided therein without account" instead of "Then those will enter Paradise; they will be provided therein without account" become invalid?

If the Imam unintentionally makes a grammatical error (laḥn) in reciting the surah (definition) after Al-Fatiha, which alters the meaning, his prayer is valid and not invalidated by that, because reciting a surah is not a pillar of prayer. And a grammatical error that changes the meaning in a surah other than Al-Fatiha does not prevent the validity of the prayer or following the Imam, unless it was done intentionally.