This time we’re going bigger than ever. Fabric, Power BI, SQL, AI and more. We're covering it all. You won't want to miss it.
Learn moreLevel up your Power BI skills this month - build one visual each week and tell better stories with data! Get started
Hi everyone,
I'm getting the following error, when I try to access a PowerBI-Dataset from a datahub:
The value cannot be NULL.
Parameter name: DataSource
I don't know why. PowerBI and the data gateway are up to date.
Is there a solution for this?
Thanks for your help.
Solved! Go to Solution.
I found the reason:
Using DirectQuery on datasets from “My workspace” isn't currently supported.
Can Microsoft resolve this issue: Upgrade power bi desktop client to Version: 2.121.762.0 64-bit (September 2023).
Unexpected error:
Value cannot be null.
Parameter name: source
True
Unexpected error: Value cannot be null.
Parameter name: source
Details:
Microsoft.Mashup.Evaluator.Interface.ErrorException: Value cannot be null.
Parameter name: source ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Value cannot be null.
Parameter name: source ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Value cannot be null.
Parameter name: source ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Value cannot be null.
Parameter name: source ---> Microsoft.Mashup.Evaluator.Interface.ErrorException: Value cannot be null.
Parameter name: source ---> System.ArgumentNullException: Value cannot be null.
Parameter name: source ---> System.ArgumentNullException: Value cannot be null.
Parameter name: source
at System.Linq.Enumerable.Where[TSource](IEnumerable`1 source, Func`2 predicate)
Versions below work connecting to data source
Version 2.91.701.0 (March 2021
Version 2.99.782.0 (November 2021)
Any resolution for this one?
I am not using my workspace.
Source is azure databrics import and live connetion data model
HI @Twychopath ,
I am having same issue,
Error Message:
Value cannot be null.
Parameter name: Data Source
What do we need to do in order to resolve this ?
Wonderful find! I had the same issue.
I found the reason:
Using DirectQuery on datasets from “My workspace” isn't currently supported.
Check out the April 2026 Power BI update to learn about new features.
Sign up to receive a private message when registration opens and key events begin.
If you have recently started exploring Fabric, we'd love to hear how it's going. Your feedback can help with product improvements.