"message": "Malformed UTF-8 characters, possibly incorrectly encoded",

[michaelchemani]

I got : "message": "Malformed UTF-8 characters, possibly incorrectly encoded", when trying to decode a token.
$public_key = openssl_pkey_get_public('file://'.__DIR__.'/keys/public.pem'); if (! $signature->isValid($public_key, 'ES256')) { return new Response('Unauthorized', 403); }
It's working fine when a generate the token using your library but when the token came from elsewhere (a ruby library) I got that error.

Any idea?