404 when adding product to cart with FroshDevelopmentHelper activated

[RafaelKr]

PHP Version

8.0

Shopware Version

6.4.9.0

Actual behaviour

When the FroshDevelopmentHelper is activated you get a 404 in the offcanvas cart when adding a product from it's product detail page to it.

I just noticed it's because it then does a request to the following URL:
http://localhost:8000/MyProduct/%3C!--%20BLOCK%20BEGIN%20buy_widget_buy_form_action%20(vendor/shopware/platform/src/Storefront/Resources/views/storefront/component/buy-widget/buy-widget-form.html.twig)%20--%3E/checkout/line-item/add%3C!--%20BLOCK%20END%20buy_widget_buy_form_action%20--%3E

So somehow it includes the BLOCK-comments which FroshDevelopmentHelper adds.

Adding a product from a product slider just works fine, it's just the "Add to cart"-button on the product detail page.

Expected behaviour

Adding a product to cart should be working with FroshDevelopmentHelper activated.

Steps to Reproduce?

1. Setup a Shopware 6 shop
2. Install and activate FroshDevelopmentHelper
3. Go to a product detail page and add it to cart via the button in the buy-box