I am reading a journal and found a sentence which seems wrong. The sentence is,

> It  is apparent  that  the errors originate from outside the model.

This sentence used from and outside together which are supposed to be preposition here. I guess double preposition is not allowed in the English Grammar. May someone clarify this point for me? Moreover, I rewrote the sentence. May anyone check whether my modification makes the sentence correct?

**The modified sentence:**

>  1.) It is apparent that the errors originate outside the model.  
    2.) It is apparent that the errors originate from the outside of the model.

Any help are appreciated!