[4.0b4] Class 'Joomla\CMS\Installation\Helper\ArrayHelper' not found

[lancedouglas1]

Steps to reproduce the issue

1. Download Joomla_4.0.0-beta4-Beta-Full_Package.tar.gz
2. tar -zxvf
3. set permissions on dirs/files
4. visit with browser to kickoff installation
5. add installation details (site name, login, db)
6. click "install joomla" button

Expected result

• Installation begins

Actual result

• Error Message:

Class 'Joomla\CMS\Installation\Helper\ArrayHelper' not found

System information (as much as possible)

OS: Ubuntu 20.04LTS - Pro
PHP: php7.4-fpm
RProxy: 1.18.0-0ubuntu1

Additional comments

I'm repeating the same steps the I followed this morning successfully (on ubuntu 18.04LTS).

[zero-24]

Can you please post the full message with the file where the issue is? It seems there is a missing use statment in that file.

[lancedouglas1]

Thanks @zero-24 for the quick reply.

The error message only shows up on the installation screen, not in the logs, so I'm not sure of the specific file/line that is triggering the error.

[lancedouglas1]

I just tried with the nightly build, that's why that image shows the beta5-dev in the header, by the way. Same issue.

[lancedouglas1]

If found it based on your question @zero-24
Issue is that installation/src/Helper/DatabaseHelper.php is missing the use.

On line 20 I added:
use Joomla\Utilities\ArrayHelper;

[zero-24]

Can you send a PR with that change?

[zero-24]

Closing as there is a PR. thanks @lancedouglas1 👍