This was caused by some boilerplate code we'd included from persona/browserid. Since the error message was not particularly useful or informative, I've just removed it, although it's possible we'll regret this later in the case of other errors.
This was caused by some boilerplate code we'd included from persona/browserid. Since the error message was not particularly useful or informative, I've just removed it, although it's possible we'll regret this later in the case of other errors.