I cann't simply give you the answer.

You have to find out yourself. But I did see a very ridiculous Ramachadran plot for a published structure– I mean the plot would not look like that if the job was done by a sensible human protein crystallographer.

I guess what happened was the computer could have joint some solvent atoms with some of the atoms along the backbone. The whole structure might be completely wrong. (so the space group and the dimension of unit cells might also be wrong.)