Question

15

How to fix Duplicate Facebook pixel ID error?

rated 0 times [ 18] [ 3] / answers: 1 / hits: 54428 / 8 Years ago, wed, march 30, 2016, 12:00:00

Added facebook pixel like they showed here
here
Now getting an error:

fbevents.js:9 Facebook Pixel Error: Duplicate Pixel ID: some-pixel-id

Cannot understand what causes this error. Even when I run the code from their example with removed pixel code from html in the console I get the same result.

Anyone knows what that means and how to solve this error ?

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kylanalis

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answered 8 Years ago cindyanyssam · Accepted Answer

I found the solution on this page actually.

Its because everytime you send an event the code is initialized
with the same pixel id. Actually initialization should happen only
once.

This fix works. You can verify that by using the Facebook Pixel Helper as an extension in Chrome.

if(typeof fbq === 'undefined') {

    !function(f,b,e,v,n,t,s){if(f.fbq)return;n=f.fbq=function(){n.callMethod?

    n.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!f._fbq)f._fbq=n;

    n.push=n;n.loaded=!0;n.version='2.0';n.queue=[];t=b.createElement(e);t.async=!0;

    t.src=v;s=b.getElementsByTagName(e)[0];s.parentNode.insertBefore(t,s)}(window,

    document,'script','https://connect.facebook.net/en_US/fbevents.js');



    fbq('init', '123123123213121');

    fbq('track', 'PageView');

    fbq('track', '{{fBPixelType}}');

  }

  else {

    fbq('track', '{{fBPixelType}}');

  }