Did you try giving the model an "out"? > You may output only up to 500 words, if the best summary is less than 500 words, that's totally fine. If details are u

Did you try giving the model an "out"? > You may output only up to 500 words, if the best summary is less than 500 words, that's totally fine. If details are unclear, do not fill-in gaps, do leave them out of the summary instead.