We have created workflow using Nintex workflow for o365 and the workflow having Assign Task action configured with Nintex Form.

Then we are trying to get the workflow details using REST API but we getting error like 500 internal server error.

We are facing the issue for only workflows configured with forms. 

please find the below REST Api url  and the error we are facing

https://tenantname.nintexo365.com/api/v1/workflows/packages/344eceae-9847-432d-aadc-54e55f7d2770

{StatusCode: 500, ReasonPhrase: 'Internal Server Error', Version: 1.1, Content: System.Net.Http.StreamContent, Headers: { Correlation-Identifier: be1a70cb-f353-4ddf-ac7e-e2a872c4f6e5 Strict-Transport-Security: max-age=31536000; includeSubdomains; X-Region: West US Connection: Keep-Alive Cache-Control: proxy-revalidate Date: Wed, 09 Jun 2021 21:14:10 GMT Server: X-Powered-By: Nintex Content-Length: 118 Content-Type: application/json; charset=utf-8 }}