I am stuck on Amazon-EventBridge

Hi, here is the link for sugar connector that we are trying to utilize. 

https://support.sugarcrm.com/Documentation/Installable_Connectors/Amazon-EventBridge/index.html 

I have followed the steps mentioned below: 

1- Install this connector in latest version of sugar.

2- created iam user for aws also configured it through aws package available for ubuntu.

when I try to create record for logic hook, it gives me an error. screenshot is attached.

Please help.

Regards,