Power BI DataSource.Error: Web.Contents failed to get contents from url error?

We found the solution. It looks like it stemmed from a newer update.

What was wrong is ContentType="application/json" in the headers needed to have it's format updated. The correct format is #"Content-Type"="application/json".

So the original code:

let
    url = "http://<domain>:<port>/jderest/orchestrator/SEF_ORCH_V4211APBISalesDash",
    body = "{""deviceName"":""PowerBI"",""username"":""<username>"",""password"":""<password>""}",
    Source = Json.Document(Web.Contents(url, [Headers=[ContentType="application/json"],Content = Text.ToBinary(body)]))
in
    Source

Needed to be:

let
    url = "http://<domain>:<port>/jderest/orchestrator/SEF_ORCH_V4211APBISalesDash",
    body = "{""deviceName"":""PowerBI"",""username"":""<username>"",""password"":""<password>""}",
    Source = Json.Document(Web.Contents(url, [Headers=[#"Content-Type"="application/json"],Content = Text.ToBinary(body)]))
in
    Source

The reason for this is because after an update (not sure which one) ContentType="application/json" was treated as a miscellaneous tag

With the change to #"Content-Type"="application/json" It was no longer a miscellaneous tag. It is treated as an entity like before.