If the problem is the word "fruit" in place of "bananas", then it could be described as a lack of concreteness (or concretion) or specificity. (Concreteness is the actual quality of being concrete, while concretion is the act of concreting or making more concrete.)
If the problem is due to the redundancy of the two words "apple" and "fruit", then it could be referred to as "categorically tautological", "taxonomically tautological", or "hierarchically tautological".
@Pat
If you say
"could you bring some apples and bananas"
It is a correct sentence.
but if you say
"could you bring some apples and fruit"
There might be an error in the sentence.
How do you use a word/phrase to describe the error?