Module not shown anymore after update to MagicMirror v2.13.0

[PieBa]

Hi,
after updating my MagicMirror to v2.13.0, i got this error:

Uncaught TypeError: Cannot read property 'replace' of undefined
    at cmpVersions (module.js:528)
    at Function.Module.register (module.js:506)
    at MMM-FRITZ-Box-Callmonitor.js:12

As a workaround I added a comment in front of line 12 of file MMM-FRITZ-Box-Callmonitor.js
Now the module shows up again.

MMM-FRITZ-Box-Callmonitor.js after adding comments:

/* global Module */

/* Magic Mirror
 * Module: MMM-FRITZ-Box-Callmonitor
 *
 * By Paul-Vincent Roll http://paulvincentroll.com
 * MIT Licensed.
 */

Module.register("MMM-FRITZ-Box-Callmonitor", {

	// requiresVersion: "2.0.0",        <-- add // at the beginning of this line

	// Default module config.
	defaults: {
		numberFontSize: 30,
		vCard: false,
		fritzIP: "192.168.178.1",
		fritzPort: 1012,

I hope this helps someone.