Trouble visualizing certain amino acids: appear to be incomplete with gaps in side chain structure

Thank you so much for all your help with the I-Tasser software. I have used it extensively and truly appreciate your efforts. I have had some trouble lately visualizing certain amino acids. When looking at the side chains in the ball-and-stick format, the side chains seem to be misconfigured. The are not complete structures and have various gaps, and dots. I have even tried re-submitting the same sequence but unfortunately I get the exact same result.
Here is a link to one of the proteins, and I specifically had difficulty visualizing the side chains for the F152, T175, T194.
http://zhanglab.ccmb.med.umich.edu/I-TASSER/output/S199383/

Is there anything that can be changed to fix this error? I am assuming it is something wrong with the computation.

Thanks for all your help!