Free Trial CS-Cart custom addon Error

Hello am trying to setup my custom addon for a payment method in CS-Cart.
It seems like because am using a free trial account that I cannot upload it because navigating through the logs I can see that there is an exception thrown because of an invalid license. How can I get past this error in order to continue testing?

Error: Requests (http/https request)
URL: CS-Cart eCommerce Platform – Fast, Flexible, Scalable for Growth
Request: ‘dispatch=product_updates.get_available&ver=4.18.3&edition=MULTIVENDOR&lang=en&product_build=&license_number=’
Response: <?xml version="1.0"?> Invalid license number. Please re-check.

You can download new CS-Cart installation package and reinstall it. In this case you will get new trial period

I installed it yesterday with my trial account. It isn’t a matter of expired trial period.

This log entry is not related to the functionality of add-ons. Please provide a detailed description of the issue you are facing.

I’m using a trial account and attempting to upload an Add-On that is not listed in the marketplace. I’ve tried uploading several Add-Ons, including one I developed myself and others from reputable companies. However, the upload consistently fails.

Upon reviewing the logs, I noticed that each failed attempt corresponds exactly in both timestamp and log count with this specific error (attached to this topic). This strongly suggests that the error is directly related to the issue I’m experiencing when trying to upload the Add-On.

Could you please clarify what you mean by ‘fails’? Are any errors being displayed? Is the add-on not being installed, activated or is there another issue?

It displays this error " Error Unable to read package schema (schema.json)" But as I told you, investigating the logs I see a different error.

In most cases, the log entries that can be viewed in the admin panel are not related to the errors that appear in the notifications.

This error only occurs if you try to install add-ons via the Upload upgrade package functionality, which is not intended for this purpose.

Please refer to this article, which describes the process of manually installing add-ons:
https://docs.cs-cart.com/latest/user_guide/addons/1manage_addons.html#install-addon-from-archive