Can You Find the Grammar Error?

This is all just for fun. No grades will be given.

[1] My mother had a horror of being late for church, so every Sunday morning she was always nagging my brother and I to “hurry up hurry up hurry up.”

     Correction: My brother and me, not I. Your can hear how it’s wrong if you forget about your brother for a minute and say to yourself, “Mom was always nagging I.”