go example from SDK 1.4.2 can't be installed

I opend the go example from the SDK 1.4.2 and I built the snap (ARM and AMD). But I'm not able to install the snap on virtual and real core. I always get the following error message:

Internal server error (500) Operation failed (Code: 500)! Message: cannot install snap file: snap is unusable due to bad permissions; contact developer, Kind:

P.S. CheckBox "Allow installation from unknown source" is active

Best reply by CodeShepherd

In this version there is an unknwon problem if you build your snap with the UbuntuVM. We are still investigantng this.

If you use the WSL for builing it will work.

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