GA-4 Analytics [Support Thread]

**lat9** · 16 Feb 2025, 02:05 PM

Originally Posted by brian70809

I'm getting this on a new install of ZC 2.1

--> PHP Warning: Undefined array key "products_name" in xxxx zc_plugins/GA4/v2.0.1/catalog/includes/classes/observers/ga4AnalyticsObserver.php on line 741.

I'm going to turn it off.. I see where it's supposed to get it on line 741.. not sure why it is not getting it.

A copy of the full log with the backtrace information would help a lot, since it's the calling path that's introduced the issue.

**joeyzone** · 7 Mar 2025, 04:25 AM

Originally Posted by lat9

A copy of the full log with the backtrace information would help a lot, since it's the calling path that's introduced the issue.

#0 /zc_plugins/GA4/v2.0.1/catalog/includes/classes/observers/ga4AnalyticsObserver.php(741): zen_debug_error_handler()
#1 /zc_plugins/GA4/v2.0.1/catalog/includes/classes/observers/ga4AnalyticsObserver.php(238): ga4AnalyticsObserver->getItemInfo()
#2 /includes/classes/traits/NotifierManager.php(106): ga4AnalyticsObserver->update()
#3 /includes/templates/wokiee/common/tpl_main_page.php(241): base->notify()
#4 /index.php(94): require('/home/afiwwe6sf...')
--> PHP Warning: Undefined array key "products_name" in /zc_plugins/GA4/v2.0.1/catalog/includes/classes/observers/ga4AnalyticsObserver.php on line 741.

**swguy** · 7 Mar 2025, 07:46 AM

This bug has already been reported here:

https://github.com/lat9/ga4-analytics/issues/29

**nicksab** · 3 Apr 2025, 12:42 AM

ZC 2.0.1 with GA-4 analytics version 1.2.4

Not sure if it normal behavior or a bug but when looking the page source of main page, it appears the script is being loaded 2 times. Site is at www.royal-fleur(dot)com for reference

Code:

<html dir="ltr" lang="en" prefix="og: https://ogp.me/ns# fb: https://ogp.me/ns/fb# product: https://ogp.me/ns/product#">
  <head>
  <!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-JQL28SP4BW"></script>
<script>
    window.dataLayer = window.dataLayer || [];
    function gtag(){dataLayer.push(arguments);}
    gtag('js', new Date());
    gtag('config', 'G-JQL28SP4BW');
</script>
 <meta charset="utf-8">
<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-JQL28SP4BW"></script>
<script>
    window.dataLayer = window.dataLayer || [];
    function gtag(){dataLayer.push(arguments);}
    gtag('js', new Date());
    gtag('config', 'G-JQL28SP4BW');
</script>
    <link rel="preload" href="https://code.jquery.com/jquery-3.7.1.min.js" integrity="sha256-/JqT3SQfawRcv/BIHPThkBvs0OEvtFFmqPF/lYI/Cxo=" crossorigin="anonymous" as="script">
    <link rel="preload" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-xOolHFLEh07PJGoPkLv1IbcEPTNtaed2xpHsD9ESMhqIYd0nLMwNLD69Npy4HI+N" crossorigin="anonymous" as="style">

Is this normal behavior? If not how can i fix it?

Would upgrading to the latest version help? I am on ZC 2.0.1 so it may not be compatible.

Thank you for your time and help

**dbltoe** · 3 Apr 2025, 01:06 AM

You'll need to find which of the Google Tag Manager IDs belongs with the current site and remove the non-current.

While it probably doesn't affect site performance, Google does not recommend having more than one gtag.

**Shop Suey** · 3 Apr 2025, 07:40 AM

Originally Posted by dbltoe

You'll need to find which of the Google Tag Manager IDs belongs with the current site and remove the non-current.

While it probably doesn't affect site performance, Google does not recommend having more than one gtag.

What Google exactly says is:

keep the number of tags [...] as lean as possible

Most browsers will not open more than four to eight HTTP requests to a single domain at a time. If you have a high number of tags on the same domain firing under the same conditions, tags will only fire within this browser limitation.

https://support.google.com/tagmanage...72488?hl=en-GB

**nicksab** · 3 Apr 2025, 08:39 PM

Originally Posted by dbltoe

You'll need to find which of the Google Tag Manager IDs belongs with the current site and remove the non-current.

While it probably doesn't affect site performance, Google does not recommend having more than one gtag.

Originally Posted by Shop Suey

What Google exactly says is:

keep the number of tags [...] as lean as possible

Most browsers will not open more than four to eight HTTP requests to a single domain at a time. If you have a high number of tags on the same domain firing under the same conditions, tags will only fire within this browser limitation.

https://support.google.com/tagmanage...72488?hl=en-GB

Thank you both for the prompt assist.

I am only using the G4-Analytics plug in.

As you can see in the page source, the gtag id is the same in both location.

Code:

<script async src="https://www.googletagmanager.com/gtag/js?id=G-JQL28SP4BW"></script>
<script>
    window.dataLayer = window.dataLayer || [];
    function gtag(){dataLayer.push(arguments);}
    gtag('js', new Date());
    gtag('config', 'G-JQL28SP4BW');
</script>
 <meta charset="utf-8">
<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-JQL28SP4BW"></script>

I made a test ( maybe pointless) but oddly if i change the gtag ID in the G4 Anlytic admin setting, the ID changes in both places.

I may just uninstall G4-anyltics to see if the script is still loaded. Not sure why the script would be loaded twice on the same page

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