$this->backupSwitchState();
$templateVariableContainer = $this->renderingContext->getViewHelperVariableContainer();
- $templateVariableContainer->addOrUpdate(\TYPO3\CMS\Fluid\ViewHelpers\SwitchViewHelper::class, 'switchExpression', $expression);
+ $templateVariableContainer->addOrUpdate(\TYPO3\CMS\Fluid\ViewHelpers\SwitchViewHelper::class, 'switchExpression', serialize($expression));
$templateVariableContainer->addOrUpdate(\TYPO3\CMS\Fluid\ViewHelpers\SwitchViewHelper::class, 'break', FALSE);
foreach ($this->childNodes as $childNode) {