$this->saveWarningMessage(
t('Thumbnails cache has been cleared.') . ' ' .
- '<a href="'. $this->container->basePath .'/admin/thumbnails">' . t('Please synchronize them.') .'</a>'
+ '<a href="' . $this->container->basePath . '/admin/thumbnails">' .
+ t('Please synchronize them.') .
+ '</a>'
);
} else {
$folders = [