I came to post this and after seeing your note I decided to look at the code on line 97 and noticed it uses an anonymous function in there, which I assume has only been recently introduced in PHP.
Anyway, I hopped onto my hosting account and bumped up the PHP version from 5.4 to 7.0, but you probably don’t need to go that high. After that it worked fine. I’m guessing that’s the problem you’re seeing as well.
