when a page fault happens we get placeholder function called: 91990
then after instantiating the compiled module we try to print out the function at the table index to get the function index.
we get something like below
in chrome ƒ 67552() { [native code] }
but in FireFox we get function() { [native code] }

this prevents us from obtaining the function which is missing in production environment. we need this in order to determine the workflow to train our primary module for.