Hi,

Let's see if I can help you with your PayPal issue in AbanteCart. It's possible that the error message you're receiving indicates that there's an issue during the request process.

The solution you found is interesting and could be helpful for other users experiencing similar issues. It's important to note that if there's an issue with shipping extensions, this could affect the functionality of PayPal Express.

I hope your solution helps other users who encounter this issue. If you need more help, don't hesitate to ask.

Good luck with your online store!