TYPO3 Core

A faulty TCA configuration can cause an Undefined array key

[$currentLabel, $currentKey] = $itemConfiguration;

'column' => [
        'exclude' => true,
        'label' => 'Columnname',
        'config' => [
            'type' => 'select',
            'renderType' => 'selectSingle',
            'items' => [
                [
                    'Faulty  entry',
                ],
                [
                   'Correct entry ',
                    '100',
                ],
            ],
           'default' => 0,
        ],
],