println blocks with uncaught exception: AssertionError: Assertion failed: Cannot send without an open socket

[Hendekagon]

If Figwheel isn't running, println blocks with uncaught exception: AssertionError: Assertion failed: Cannot send without an open socket

[magnars]

Same here. If figwheel has connected, and then disconnects (server taken down for instance), this exceptions happens all over the place. Very weird. It actually stops the error boundary in React from even rendering anything.