Error while updating from 4.4.3 to 4.4.4: Class "Joomla\CMS\Crypt\Crypt" not found Topic is solved

[Jefferson49]

If updating from from Joomla 4.4.3 to Joomla 4.4.4 I get an error: Class "Joomla\CMS\Crypt\Crypt" not found

With a search in the forum and in the internet, I could not find any solution for this topic. Can anyone help?

Stack trace:
An error has occurred.
0 Class "Joomla\CMS\Crypt\Crypt" not found
Call stack
# Function Location
1 () JROOT/libraries/src/User/UserHelper.php:527
2 Joomla\CMS\User\UserHelper::genRandomPassword() JROOT/administrator/components/com_joomlaupdate/src/Model/UpdateModel.php:566
3 Joomla\Component\Joomlaupdate\Administrator\Model\UpdateModel->createUpdateFile() JROOT/administrator/components/com_joomlaupdate/src/Model/UpdateModel.php:543
4 Joomla\Component\Joomlaupdate\Administrator\Model\UpdateModel->createRestorationFile() JROOT/administrator/components/com_joomlaupdate/src/Controller/UpdateController.php:117
5 Joomla\Component\Joomlaupdate\Administrator\Controller\UpdateController->install() JROOT/libraries/src/MVC/Controller/BaseController.php:693
6 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/libraries/src/Dispatcher/ComponentDispatcher.php:143
7 Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
8 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/AdministratorApplication.php:143
9 Joomla\CMS\Application\AdministratorApplication->dispatch() JROOT/libraries/src/Application/AdministratorApplication.php:186
10 Joomla\CMS\Application\AdministratorApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:293
11 Joomla\CMS\Application\CMSApplication->execute() JROOT/administrator/includes/app.php:61
12 require_once() JROOT/administrator/index.php:32

[Per Yngve Berg]

Mod. Note: Relocated from Installation to the Upgrade Forum.

[Per Yngve Berg]

https://api.joomla.org/cms-3/deprecated ... /Crypt.php

That class exists in Joomla 3.x

[Jefferson49]

> That class exists in Joomla 3.x

Yes, and it seems that some of the methods of the class have been deprecated.

However, the class still exists in 4.4:
https://github.com/joomla/joomla-cms/bl ... /Crypt.php

And even in 5.1:
https://github.com/joomla/joomla-cms/bl ... /Crypt.php

And the call to the Crypt method in the UserHelper class, JROOT/libraries/src/User/UserHelper.php:527, is also included in 4.4.:
https://github.com/joomla/joomla-cms/bl ... r.php#L527

Also, the UserHelper class does contain a use statement to Joomla\CMS\Crypt\Crypt:
https://github.com/joomla/joomla-cms/bl ... er.php#L20

A more general question:
What could be a reason that Joomla throws an error Class "Joomla\CMS\..." not found?

[Jefferson49]

> What could be a reason that Joomla throws an error Class "Joomla\CMS\..." not found?

Further investigation showed that the file "...\libraries\src\Crypt\Crypt.php" was missing in my installation. After restoring the folder "...\libraries\src\Crypt\" from a backup, the 4.4.4 update works.

Sorry for bothering you with this issue. The issue was related to the specific circumstances in my installation. For some unknown reason, the files in "...\libraries\src\Crypt\" got deleted or moved.