Error "Unexpected Error ... Unable to get property ' ' of undefined or null reference" Viewing Published Workbook

Issue

When viewing a published dashboard, the following error might occur:

Unexpected Error: An unexpected error occurred. If you continue to receive this error please contact your Tableau Server Administrator. Unable to get property ' ' of undefined or null reference.

Environment

Tableau Server

Resolution

Clear the browser cache.

Additional Information

Forcing the web browser to get a fresh copy of content from the server instead of using stored (aka cached) content is a common solution for many web issues. The specific steps involved vary depending on the web browser and version. This third-party article has instructions for performing a full refresh of the current page in several popular browsers.

An even more thorough approach is to clear the browser's cache of all stored content. Again, the steps vary from browser to browser and version to version. The website refreshyourcache.com has instructions for many browsers.