Error Running Flow in Tableau Prep Builder Command Line Utility: "We don't have credentials of all connections in tfl/tflx file."

Issue

When running a flow in Tableau Prep 2020.3.2 command line utility, with published data as both an input and an output and using the v2 credentials file (typically used for Version 2020.3.1 and later), the flow fails to run with the following error:

We don't have credentials of all connections in tfl/tflx file. The following connection(s) were not found: https://<pod>.online.tableau.com (<sitename>)

Environment

Tableau Prep Builder 2020.3.2 command line utility
Tableau Cloud

Resolution

Upgrade to Tableau Prep Builder 2020.3.3 or later.

If upgrading is not possible, use the v1 credentials file (typically used for Version 2020.2.3 and earlier).

Cause

This behavior is related to a known issue, which is fixed in more recent versions of Tableau Prep Builder.

Additional Information

This article is specific to using Tableau Prep Builder 2020.3.2 with the new credential format. If you encounter this error with the older version of Tableau Prep Builder, please also refer to this article too.
Refreshing Flow Output From Command Line Error "The following connection(s) were not found: <data source server>"