The variation I saw with this, on AWS, was this:

"You will remember that there are two ways to specify the provider= part of this. One provider config binds to account.cloud.databricks.com and the other binds to your-company-and-workspace.cloud.databricks.com. The second example has a "host" parameter to fill in, a mandatory parameter. You're using one config when it wants the other one. In this case, you're using the first type and it wants the second type."