There isn’t. It is a rather large project and I haven’t looked into how to gzip yet, but your internet is probably faster than mine.
http://www.jacobbeauseigneur.com/HTML5/PortfolioArcade
It works perfectly when working in editor, and I won’t be at a computer with emscripten, nor do I know exactly how I’d look up any other errors for this from the engine. This iteration may have been packaged in 4.7.2 from the Launcher, but when I get home I will export one with 4.7.3 to grab the error. At home, the error was still giving me this part of the error:
jsStackTrace@http://jacobbeauseigneur.com/64bit/UE4Game.js:853:12 stackTrace@http://jacobbeauseigneur.com/64bit/UE4Game.js:867:21 abort@http://jacobbeauseigneur.com/64bit/UE4Game.js:5089947:24 abort@http://jacobbeauseigneur.com/64bit/UE4Game.js:9533:2
It seems to give less of an error from the server side now than it did for me last night.