Why this error by creating a Security Group with Nintex in SP Online?

We have a list in SharePoint Online, and when a user creates a new item, the Workflow has to create a SharePoint Security Group with the same name that Application column. We follow the steps found in this Publication, as it explains what we want to achieve.

The problem is that the Workflow always suspended with the following error:

For some reason we cannot get value in the digest token:

Please, could you help us?

 Thanks in advance.

nintexworkflows‌

Fernando Hunth‌, Please, any suggestions? Thanks!