Magento 2 module testing tools gives error "short array syntax not allowed",

we do code like following

public function toOptionArray()
    {
        return [
            ['value' => 0, 'label' => __('Disable')],
            ['value' => 1, 'label' => __('Enable')],
           
        ];
    }

Here is screenshot

Can any one tell me how can i solve this?