Wrong return URL

[maxout]

Hi guys, I am using Shopware headless with a nextjs strorefront. Mollie works as it should. but now I have set up a staging instance. the store-api is now accessible at https://mydomain.com/stage/store-api/. When I now initiate a payment, I am correctly redirected to the mollie payment page. but after the payment I am redirected to https://mydomain.com/stage/stage/api/mollie/payment/return/018da7b419aa72c08e1173e57f5adf5a
why? where does the double stage come from? does anyone have an idea?
Thanks in advance

[fjbender]

I don't have an idea straight away, but I think you should find the culprit pretty quickly by starting debugging at

Shopware6/src/Service/Router/RoutingBuilder.php

Lines 75 to 96 in bf0055d

	public function buildReturnUrl(string $transactionId): string
	{
	$isStoreApiCall = $this->routingDetector->isStoreApiRoute();
	$params = [
	self::ROUTE_PARAM_RETURN_ID => $transactionId
	];
	# only go to an API domain if we are working in headless scopes.
	# otherwise stick with the existing storefront route.
	# if we do not do this, we have weird redirect problems.
	# important is, that we only update the domains in case of custom domains
	# if we are in the headless scope, storefront should always be as it is.
	if ($isStoreApiCall) {
	$redirectUrl = $this->router->generate('api.mollie.payment-return', $params, $this->router::ABSOLUTE_URL);
	$redirectUrl = $this->applyAdminDomain($redirectUrl);
	} else {
	$redirectUrl = $this->router->generate('frontend.mollie.payment', $params, $this->router::ABSOLUTE_URL);
	}
	return (string)$redirectUrl;
	}

[boxblinkracer]

Hi

it just used the symfony router as far as i can remember, as @fjbender already wrote.
but it also uses an overwrite-combination from the HOST of the .env file in Shopware
maye you have a weird value in there?