Missing Label as column

[mykolakozubskyi]

I'm using the B13 Container extension in TYPO3 to create a custom grid element with multiple columns. The configuration works perfectly on my local TYPO3 installation (a clean instance), but on the client's test system, I encounter an issue in the "Column" tab of the backend editor.

Instead of displaying the column number or its label, it shows "Missing Label[("201")]" for the custom colPos values I defined.

\TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\B13\Container\Tca\Registry::class)->configureContainer(
    (
        new \B13\Container\Tca\ContainerConfiguration(
            'pp-grid-6cols',
            'Grid 6 col',
            'Grid with 6 columns',
            [
                [
                    ['name' => '1', 'colPos' => 201],
                    ['name' => '2', 'colPos' => 202],
                    ['name' => '3', 'colPos' => 203]
                ],
                [
                    ['name' => '4', 'colPos' => 204],
                    ['name' => '5', 'colPos' => 205],
                    ['name' => '6', 'colPos' => 206]
                ]
            ]
        )
    )
    ->setIcon('EXT:dd_tmp/Resources/Public/Icons/grid-icon.png')
    ->setGroup('Grids')
);

Troubleshooting Tried:

1. Verified that the same configuration works locally.
2. Checked that colPos values do not conflict with existing extensions.
3. Cleared TYPO3 cache and verified TCA configuration.