How to fix error in "rating average"?

See the example:
Sophia Chaudhary videos - by Youtube Video Script

See the "rating average" of each video, it shows:
Rating Average: 3.8' max='5' min='1' numRaters='5' rel='http://schemas.google.com/g/2005#overall from people
If the rating average "N/A" is no problem.

Please help me to fix this script.

Thanks!