Answer: Kids, wanting to follow in the footsteps of the clowning icon, approach him for guidance.
The reason why the sentence has a subject-verb agreement error is that the subject is in a plural form (kids) and the verb is in a singular form (approaches is the third-person, singular form of the verb "approach"). Therefore, in order to correct this error, we need to change the verb to a plural form. The plural form of this verb would be "approach."