Shopware is an open source eCommerce platform. Versions prior to 5.6.10 are vulnerable to system information leakage in error handling. Users are recommend to update to version 5.6.10. You can get the update to 5.6.10 regularly via the Auto-Updater or directly via the download overview.
https://github.com/shopware/shopware/security/advisories/GHSA-9vxv-wpv4-f52p
https://github.com/shopware/shopware/commit/dcb24eb5ec757c991b5a4e2ddced379e5820744d
https://docs.shopware.com/en/shopware-5-en/security-updates/security-update-05-2021