Please use mozregression 5.4.1.dev1 for the time being until the next version is released. This dev version has a workaround that will allow you to run GVE.
Bug 1842608 Comment 6 Edit History
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Please use mozregression [5.4.1.dev1](https://github.com/mozilla/mozregression/releases/tag/5.4.1.dev1) for the time being until the next version is released. This dev version has a workaround that will allow you to run GVE.