Flash module missing?

Thanks Gordon,
That got rid of the warning but the variable I create from FlashEEPROM module is now undefined so it crashes at runtime.

Uncaught TypeError: Expecting a number or something iterable, got undefined
 at line 226 col 31
var str = E.toString(f.read(0));
                              ^
in function "readBeacon" called from line 577 col 14
  readBeacon();
             ^
in function called from system

f is created by

var f = new (require("FlashEEPROM"))();

Is the Flash module supposed to be built into the firmware? Should I try reflashing.

Cheers
David