[Linux] When Creating a New Connection from Tableau Server Browser Connecting to BOX Data Source, "Unexpected Error" Occurs

Issue

When creating a new connection from Tableau Server browser connecting to BOX data source, the following message occurs:

Error Message:
Unexpected Error: An unexpected error occurred. If you continue to receive this error please contact your Tableau Server Administrator.

Environment

Tableau Server Linux
Using forward proxy to connect BOX data source

Resolution

This behavior is caused by a defect, ID 1365609, which is currently under investigation.

As a workaround try the following steps instead of creating a connection from the browser directly:

Use Tableau Desktop to connect to BOX.
Then publish the workbook to Tableau Server.

Cause

Creating a new BOX connection in 'Web Edit' mode ignores forward proxy configuration on Tableau Server on Linux version.
This issue is under investigation under ID 1365609.