This article describes a known Magento 2.4.0 issue with Klarna payment method, where enabling Klarna on-site messaging without specifying a design theme, results in not displaying product pages on the storefront correctly (product pages appear blank).
Affected products and versions
- Magento Commerce 2.4.0
- Magento Commerce Cloud 2.4.0
Issue
Prerequisites: Klarna payment method is enabled.
Steps to reproduce:
- In the Magento Admin, go to Stores > Configuration > Sales > Payment Methods > Klarna > Klarna On-Site Messaging.
- Set Enable to Yes.
- Leave the Design theme field blank.
- Save configuration by clicking Save Config.
- Go to storefront and navigate to any product page.
Expected result:
The page loads successfuly with default design theme applied for Klarna on-site messaging.
Actual result:
A blank page is displayed.
Solution
If enabling the Klarna on-site messaging, always ensure that the Design theme field is not blank.