Action 'Set content approval status 2' failed

[Anonymous]

I'm creating a custom approval workflow which allows employees to use the 'Start an Approval' Action to approve or reject items on a SharePoint Online List.

 
My flow is always erroring out on the 'Set Content Approval Status' step.  However, it appears to be doing what it's supposed to: it properly sets the Approved/Rejected status on the SharePoint List, and it adds the comments.

When I approve the request it works fine. However when i reject the request, it starts showing that it's 'retrying' up to 4 times, and it always ends with the following error:

Outputs Details

4 Retries - Details:

Duration: 1s

Start time: 2018-08-14T06:28:36.0898917Z

End time: 2018-08-14T06:28:36.6211421Z

Status: BadGateway

Client request ID: 1bad745b-cf56-4385-8b78-7f82fc02df05

Duration: 0s

Start time: 2018-08-14T06:28:41.7617648Z

End time: 2018-08-14T06:28:41.886796Z

Status: BadGateway

Client request ID: c26c21df-a599-431b-9ec9-7ef23bcd4601

Duration: 0s

Start time: 2018-08-14T06:28:50.9805367Z

End time: 2018-08-14T06:28:51.1836412Z

Status: BadGateway

Client request ID: 33e1cb23-adb7-443d-8c2d-0c3fa12da48d

Duration: 0s

Start time: 2018-08-14T06:29:07.2735041Z

End time: 2018-08-14T06:29:07.3673428Z

Status: BadGateway

Client request ID: bfe8ad99-75fa-4742-b41e-6cfca07b31e8

Below is full screenshot of my Flow's Configuration?

Thank You.

[Lisabel0]

I think this is PowerApps community. You should repost this in Flow community where the right experts could help you.