Error when opening any Power BI XMLA endpoint: "The following error has occurred while updating the connection: An item with the same key has already been added"

[HymieHo]

Describe the bug
Opening any powerbi:// endpoint fails with "The following error has occurred while updating the connection: An item with the same key has already been added."

To Reproduce

1. Open DAX Studio v3.0.10
2. Connect.Tabular Server.enter endpoint

• Log shows: Establishing connection
• Sign in
• After 60s or so:
  The following error has occurred while updating the connection: An item with the same key has already been added.
  Error selecting database: one or more errors occurred.
  Error setting selected database: The connection either timed out or was lost.
  Error connecting to server: xmla endpoint 

If I repeat these steps, I still get the "same key" error and the model browser is blank, but I can write and execute queries against the model. Advanced.View metrics does not work: "Error viewing metrics: the database ' ' could not be found"

Additional context
The endpoints are in the msit environment

[dgosbell]

Thanks for logging this. There is has been a change deployed to the semantic models in Power BI which has exposed a bug in DAX Studio. I will be releasing v3.11 soon with a fix for this.

[dgosbell]

I've just released v3.0.11 with a fix for this issue

[fedelmfede]

Thank you, was having the same issue until I've updated DAX studio and now it is resolved.

[sunkai-cai]

Thank you

[FireFighter1017]

Just resolved my current issue by updating DAX Studio to 3.0.11 from 3.0.9
Thanks!