What is the validity of describing Ibn Hajar and Al-Nawawi as innovators, and what is the ruling on one who holds this view, using as evidence what is stated in "Fath al-Bari" and Ibn Hajar’s interpretation of Allah's "face" as His mercy?

The Ahl al-Sunnah wa al-Jama'ah are just in their rulings, neither elevating people beyond their worth nor diminishing their status. Part of this justice is to clarify the error of those scholars and virtuous individuals who make mistakes, while simultaneously praying for mercy upon them and warning against their errors. Ibn Hajar and Al-Nawawi, despite their interpretations of some of God's attributes, are considered among the great Muslim scholars through whom God benefited the Ummah with their knowledge. They are considered from the Ahl al-Sunnah in what they agreed upon with the Salaf, but they erred in what they interpreted. They should not be declared innovators (mubtadi'ah) or judged as misguided, nor should their widely accepted books be burned. Rather, it should be said that what occurred from them was an error in ijtihad, and it is hoped that they will be forgiven for their immense service to the Sunnah of the Messenger of Allah (peace and blessings be upon him).