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Joomla 4 update and site doesn´t work anymore

Need help upgrading your Joomla! website or converting to Joomla! 4.x?

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evie_123
Joomla! Fledgling
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Posts: 3
Joined: Sat Jan 11, 2025 12:47 pm

Joomla 4 update and site doesn´t work anymore

Post by evie_123 » Sat Jan 11, 2025 2:50 pm

Hi!
Can someone help me and give me an idiot-proof instructions how to fix a website?
I updated to Joomla 4 and now site gives me an error:
"0 - Class "JString" not found"

After error reporting I got this:
Call stack
# Function Location
1 () JROOT/plugins/content/loadformmaker/loadformmaker.php:71
2 plgContentLoadformmaker->onContentPrepare() JROOT/libraries/src/Plugin/CMSPlugin.php:289
3 Joomla\CMS\Plugin\CMSPlugin->Joomla\CMS\Plugin\{closure}() JROOT/libraries/vendor/joomla/event/src/Dispatcher.php:486
4 Joomla\Event\Dispatcher->dispatch() JROOT/libraries/src/Application/EventAware.php:111
5 Joomla\CMS\Application\WebApplication->triggerEvent() JROOT/components/com_content/src/View/Featured/HtmlView.php:159
6 Joomla\Component\Content\Site\View\Featured\HtmlView->display() JROOT/libraries/src/MVC/Controller/BaseController.php:660
7 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_content/src/Controller/DisplayController.php:121
8 Joomla\Component\Content\Site\Controller\DisplayController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:693
9 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/libraries/src/Dispatcher/ComponentDispatcher.php:143
10 Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch() JROOT/components/com_content/src/Dispatcher/Dispatcher.php:56
11 Joomla\Component\Content\Site\Dispatcher\Dispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
12 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:208
13 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:249
14 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:293
15 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:61
16 require_once() JROOT/index.php:32


What does this mean and what do I need to do to fix it?

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Nidzo2203
Joomla! Explorer
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Posts: 354
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Re: Joomla 4 update and site doesn´t work anymore

Post by Nidzo2203 » Sat Jan 11, 2025 3:18 pm

Plugin Form Maker is not compatible with Joomla 4
Uninstall it and replace it with extension that supports Joomla 4

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AMurray
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Posts: 10500
Joined: Sat Feb 13, 2010 7:35 am
Location: Australia

Re: Joomla 4 update and site doesn´t work anymore

Post by AMurray » Wed Jan 15, 2025 9:44 pm

If you migrated from J3.10, the preupdate check should have advised you that extension (Plugin form maker) was not compatible.

If it is this one https://extensions.joomla.org/extension/form-maker/ as the JED says, last update was some years before Joomla 4's release. Extension release last updated 2018, Joomla 4.0.0 was released August 2021.
Regards - A Murray
Global Support Moderator

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Webdongle
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Joined: Sat Apr 05, 2008 9:58 pm

Re: Joomla 4 update and site doesn´t work anymore

Post by Webdongle » Thu Jan 16, 2025 2:37 am

Nidzo2203 wrote: Sat Jan 11, 2025 3:18 pm Plugin Form Maker is not compatible with Joomla 4
Uninstall it and replace it with extension that supports Joomla 4
Not enough. First delete all folders/files and empty the database. Then recover with the backup that was made before the failed update. After that prepare the site before attempting the update again.
http://www.weblinksonline.co.uk/
https://www.weblinksonline.co.uk/updating-joomla.html
"When I'm right no one remembers but when I'm wrong no one forgets".

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