Please don’t leave this config in place for a long time - your instance won’t receive future updates to the Encrypt plugin. That will very likely cause things to break in future.
We are aware of the signature verification issue, and are working on a fix and have pushed a fix.
However, this Ember.Test error is unexpected. @Mycobee can you confirm what version of Discourse you’re running? How did you run the update? Via the /admin/upgrade UI?