Hi,

Thanks for reaching out.

Could you please let us know which version of the Gazette template you're currently using?

Also, please share the exact error message you receive when the Backward Compatibility plugin is disabled. If possible, enable Joomla Debug and set Error Reporting to Maximum, then share the full error message or a screenshot.

We'll be happy to investigate why the template is requiring the plugin and help you resolve the issue.

Best regards,

Hi,

I use the last one : 2.0.5

In front i have this error : 0 Class "ContentHelperRoute" not found in JROOT/templates/shaper_gazette/sppagebuilder/addons/articles/site.php:269

It is like it is an old code but i check by upload addons by ftp but it is the same bug

Thank you

Hello,

I hope you’re doing well. I’m sorry for the experience you’ve had so far.

To look into this issue more closely, could you please share temporary Super Admin access (inside the hidden content box)? I’ll check this and update you as soon as possible.

Please make sure to keep a full site backup before sharing the credentials, just to be safe.

Best regards,

Hello, Yes, here you go

Hi,

Please accept my apologies.

I was able to log in to your Joomla administrator panel using a VPN.

I noticed that there are 12 pending extension updates, including the Newskit template, Helix3 System Plugin, and SP Page Builder.

Pending updates: https://cleanshot.com/share/MQ17FddR

I also noticed that you're using both the Gazette and Newskit templates on the same site.

https://cleanshot.com/share/vmvYljnw

Since Gazette is based on Helix Ultimate and Newskit is based on the Helix3 Framework, they differ significantly in architecture and functionality. Therefore, using both templates together on the same site is not recommended.

https://cleanshot.com/share/J8ZQtRWY

I would recommend migrating the pages that still use the Newskit template to Gazette, perform update for the rest of the components and then removing all Helix3-based templates, the Helix3 System Plugin, and any other Helix3-related components from the site. Keeping only a single framework (Helix Ultimate) will help avoid compatibility issues and make the site easier to maintain going forward.

If the issue still persists after using only a single framework, please enable Joomla Debug and set Error Reporting to Maximum, then share the full error message or stack trace so we can investigate further.

Best regards,

Hi,

Thanks for your feedback and the screenshots.

I don't think the issue is coming from the pending updates, as they are all very recent. I also don't think Helix3 or Shaper are the cause, since they are disabled on the site.

That said, just to be sure, I followed your recommendation: I performed all the updates and uninstalled Helix3 and Shaper. Unfortunately, I still have exactly the same error I sent you at the very beginning.

Call Stack

Function Location

1 () JROOT/templates/shaper_gazette/sppagebuilder/addons/articles/site.php:269 2 SppagebuilderAddonArticles->render() JROOT/components/com_sppagebuilder/parser/addon-parser.php:1136 3 AddonParser::getAddonHtmlView() JROOT/components/com_sppagebuilder/parser/addon-parser.php:500 4 AddonParser::viewAddons() JROOT/components/com_sppagebuilder/views/page/tmpl/default.php:90 5 include() JROOT/libraries/src/MVC/View/HtmlView.php:419 6 Joomla\CMS\MVC\View\HtmlView->loadTemplate() JROOT/libraries/src/MVC/View/HtmlView.php:204 7 Joomla\CMS\MVC\View\HtmlView->display() JROOT/components/com_sppagebuilder/views/page/view.html.php:79 8 SppagebuilderViewPage->display() JROOT/libraries/src/MVC/Controller/BaseController.php:697 9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_sppagebuilder/controller.php:86 10 SppagebuilderController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:730 11 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_sppagebuilder/sppagebuilder.php:33 12 require_once() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:71 13 Joomla\CMS\Dispatcher\LegacyComponentDispatcher::Joomla\CMS\Dispatcher{closure}() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:73 14 Joomla\CMS\Dispatcher\LegacyComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361 15 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:217 16 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:271 17 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:304 18 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:58 19 require_once() JROOT/index.php:51

Hi,

Thanks for testing that and confirming it's not related to the pending updates or the Helix3/Newskit templates.

We've identified the root cause: the articles addon (templates/shaper_gazette/sppagebuilder/addons/articles/site.php, around line 269) still references the deprecated global class ContentHelperRoute instead of the namespaced Joomla\Component\Content\Site\Helper\RouteHelper class. The Backward Compatibility plugin works around this by aliasing the old name, which is why disabling it breaks the page.

We attempted to apply the fix directly via your site's admin Template Manager, but ran into an unrelated issue: the built-in code editor (CodeMirror) is currently throwing a PHP error on your site ("3 arguments are required, 2 given"), which prevents opening any template file for editing there. Switching the default editor to TinyMCE doesn't help since the Template Manager always uses CodeMirror for code files.

Could you provide temporary FTP (or hosting file manager) access so we can apply the one-line fix directly to that file? Please share the FTP host, username, and password in the hidden content box, and remember to keep a backup before sharing access.

Best regards,

Thanks for the feedback.

Could you just send me the corrected version file? Or the line of code to change?

That way I can modify it directly.

It's a test version that I'll be deploying to a live version later, so I will have to redo the correction.

Hi,

FTP access would be preferable, as I don't currently have a Joomla 5 environment set up on my end. There are also a few other things that need to be checked.

Once I've completed the investigation, I'll let you know about the changes I've made and document them for your reference.

Best regards,

Perfect, thank you, that detailed feedback would be much appreciated.

And if possible, to verify that there are no other problematic files during the investigation.

Hello,

Do you have an update on the subject? Or could you let me know when I can expect an update?

Thank you,

Did you have time to validate

Hi there,

Thanks for following up.

I took a backup of your site and reproduced the issue on my local environment. I then applied the required fix to the Gazette template, and the issue was resolved.

The error is caused by the Gazette template's Articles addon still using the deprecated ContentHelperRoute class, which is no longer available in Joomla 5 when the Backward Compatibility plugin is disabled.

Fix

Please make sure to take a full backup of your live site before applying the changes.

Open the following file:

templates/shaper_gazette/sppagebuilder/addons/articles/site.php

1. Add the following namespace with the other use statements:

use Joomla\Component\Content\Site\Helper\RouteHelper;

2. Find all occurrences of:

ContentHelperRoute

and replace them with:

RouteHelper

There should be 6 occurrences in the file.

For example, change:

$item->catUrl = Route::_(ContentHelperRoute::getCategoryRoute($item->catslug));

to:

$item->catUrl = Route::_(RouteHelper::getCategoryRoute($item->catslug));

After applying the changes, clear the Joomla cache and test the frontend again. You should then be able to disable the Backward Compatibility plugin without getting the Class "ContentHelperRoute" not found error.

This change is backward compatible with Joomla 4 as well.

Please keep a backup of the modified file, as a future Gazette template update may overwrite the changes. We will also recommend updating to the latest Gazette version once this fix is officially included.

Best regards,

Hi,

Ok it works but other file have compatibility problems. I found this one in an override file : Class "JText" not found Call Stack

Function Location

1 () JROOT/templates/shaper_gazette/html/mod_login/default_logout.php:43

I didn't find other for the moment.

Thank you

Hi,

Yes the homepage, if you haven't the error it is that the compatibility plugin is published (i should to modify the content sometimes), id 10759

Thanks

Hi there!

I have checked your home page after disabling the backward compatibility addon and it seems fine at my end.

Best regards,

Hi,

Sorry, the error was related to the login module, which I had unpubished. I’ve re-enabled it, so you can check it again if you’d like.

Best regards,

Hi, Ok it works Thank you