Encountered at our web agency in a Magento 2-based online store: At a certain point, it was no longer possible to log in to the admin area without any changes having been made to the online store. The generated error report indicated that the certificate of a page requested via the HTTPS protocol was not trusted. The requesting file was part of the Hut Extension "Customer Approval" extension. More specifically, the error was caused in the following file, where the change needs to be made:
/app/code/EH/Core/Helper/Data.php
Here, the following page is requested:
https://license.extensionhut.com/fetch.php
This request is used to check the license / version of the Magento 2 extension. Simply change the protocol to HTTP, and everything should work again. It is best to install all available updates for the extension as well, so this issue will be resolved permanently.
Encountered at our agency in an online store running Magento CE 2.2.
