# Tracking code JS error

**URL:** <https://forum.mautic.org/t/tracking-code-js-error/8694>\
**Category:** Product Support\
**Created:** [June 9, 2017, 3:43am UTC](https://forum.mautic.org/t/tracking-code-js-error/8694 "2017-06-09T03:43:51Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![fredbh](https://avatars.discourse-cdn.com/v4/letter/f/ce7236/32.png) [@fredbh](https://forum.mautic.org/u/fredbh)\
**Post date:** [June 9, 2017, 3:43am UTC](https://forum.mautic.org/t/tracking-code-js-error/8694/1 "2017-06-09T03:43:51Z")

</div>

Hi!  
  
  
  
I’ve copy and past the tracking code to my webpage but it’s showing error on inspect tab.  
  
  
  
Site: [http://www.netresiduos.com.br/](http://www.netresiduos.com.br/)  
  
  
  
Open developer/Inspect tab and you can see the error below:

Code:

Uncaught (in promise) PushNotSupportedError {message: "'' is not a valid UUID", name: "PushNotSupportedError", stack: "PushNotSupportedError: '' is not a valid UUID↵ …neSignalSDK.js:1:155631)↵ at :1:210"}message: "'' is not a valid UUID"name: "PushNotSupportedError"stack: "PushNotSupportedError: '' is not a valid UUID↵ at new t (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:95679)↵ at https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:141163↵ at i (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:2384)↵ at Object.next (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:1719)↵ at https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:1653↵ at Promise ()↵ at Object.u [as \_\_awaiter] (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:1430)↵ at e.init (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:139450)↵ at Function.e.push (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:155631)↵ at :1:210"\_\_proto\_\_: t u @ tslib.es6.js:61 e.init @ OneSignal.ts:141 e.push @ OneSignal.ts:785 (anonymous) @ VM374:1 MauticJS.documentReady @ mtc.js:3 (anonymous) @ VM374:1

  
As you can see in the html code, it's all there,

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<div class="post-metadata">

**Author:** ![fredbh](https://avatars.discourse-cdn.com/v4/letter/f/ce7236/32.png) [@fredbh](https://forum.mautic.org/u/fredbh)\
**Post date:** [June 9, 2017, 3:43am UTC](https://forum.mautic.org/t/tracking-code-js-error/8694/2 "2017-06-09T03:43:51Z")

</div>

Hi!

I’ve copy and past the tracking code to my webpage but it’s showing error on inspect tab.

Site: [http://www.netresiduos.com.br/](http://www.netresiduos.com.br/)

Open developer/Inspect tab and you can see the error below:

`Uncaught (in promise) PushNotSupportedError {message: "'' is not a valid UUID", name: "PushNotSupportedError", stack: "PushNotSupportedError: '' is not a valid UUID↵ …neSignalSDK.js:1:155631)↵ at <anonymous>:1:210"}message: "'' is not a valid UUID"name: "PushNotSupportedError"stack: "PushNotSupportedError: '' is not a valid UUID↵ at new t (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:95679)↵ at https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:141163↵ at i (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:2384)↵ at Object.next (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:1719)↵ at https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:1653↵ at Promise (<anonymous>)↵ at Object.u [as __awaiter] (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:1430)↵ at e.init (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:139450)↵ at Function.e.push (https://cdn.onesignal.com/sdks/OneSignalSDK.js:1:155631)↵ at <anonymous>:1:210"__proto__: t
u @ tslib.es6.js:61
e.init @ OneSignal.ts:141
e.push @ OneSignal.ts:785
(anonymous) @ VM374:1
MauticJS.documentReady @ mtc.js:3
(anonymous) @ VM374:1`

As you can see in the html code, it’s all there,

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<div class="post-metadata">

**Author:** ![fredbh](https://avatars.discourse-cdn.com/v4/letter/f/ce7236/32.png) [@fredbh](https://forum.mautic.org/u/fredbh)\
**Post date:** [June 14, 2017, 3:19am UTC](https://forum.mautic.org/t/tracking-code-js-error/8694/3 "2017-06-14T03:19:38Z")

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Hello!  
Could anyone help me with this please?