After praising ibn Taymiyya, Imam ‘Abd al-Hayy al-Lucknawi mentions the following:
And some corrupt beliefs have been conveyed from him for which he was condemned by al-Yafi’i, ibn Hajar al-Makki (al-Haytami), and others. He is a man who has committed sins and made mistakes, thus the people should be aware of his errors and acknowledge his proficiency and virtue. His death was – according to what ibn Hajar has mentioned about him – in the year 728 (AH) while in prison by the command of the ruler of his time. May the Mercy of Allah be upon him.
[Imam ‘Abd al-Hayy al-Lucknawi, Iqama al-Hujja with Shaykh ‘Abd al-Fattah Abu Ghudda’s notes, pg. 29, Maktaba Matbu’at al-Islamiyya – 1998]
وقد نُقِلَ عنه عقائد فاسدة شنَّع عليه بها اليافعي وابنُ حجر المكي وغيرها، وهو بشر له ذنوب وخطأ، فلينتبه الإنسان على خطئه، وليُقِرَّ بمهارته وفضله، وكانت وفاته – على ما ذكره ابن حجر – سنة ثمان عشرين وسبعمائة في الحبس بأمرِ سلطان زمانه. منه رحمه الله تعالى.
“إقامة الحجة على أن الإكثار في التعبد ليس ببدعة” للإمام عبد الحي اللكنوي، ص. ٢٩، مكتبة مطبوعات الإسلامية – ١٩٩٨
The Reality of ibn Taymiyya 