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Expression.Error: We can't convert values of this type to JSON.
Hi Guys,
I have a dataflow that I want to use to create another dataflow but I keep getting this error when I try to load the dataflow.
The MashUp Script:
---------- Message ----------
Expression.Error: We can't convert values of this type to JSON.
---------- Session ID ----------
a7a0579a-ca7c-4ed9-af09-4744c245ddc3
---------- Request ID ----------
35502f83-504f-452a-b21a-edd3d51739a1
---------- Mashup script ----------
[DefaultOutputDestination = "DefaultDestination"]
section Section1;
shared DefaultDestination = Lakehouse.Contents(null){[workspaceId = "97dfcda7-7f2c-4e30-a6c2-27e351e329d2"]}[Data]{[lakehouseId = "f4eaf6ce-7322-42b8-a220-e5d3e7b816be"]}[Data];
[BindToDefaultOutputDestination = true]
shared Query = let
Source = PowerPlatform.Dataflows([])
in
Source;
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For anyone following this thread, it seems as though connecting to a dataflow only works if the destination dataflow is not a Gen2 dataflow.
From what I last heard from support, the internal team is trying to find a fix for this issue.
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I am experiencing the same error and submitted a support ticket. If anyone has insight, that would be great!
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Getting the same issue in my workspace.... was there every a solution found?
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If it only happens with that single entity, it could be a corrupted entity or somethign that happened with that specific entity.
If it happens to every single entity that you're trying to connect to, then it might be a bigger issue.
Regardless, I'd recommend reaching out to the support team by raising a support ticket using the link below:

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