Prosody error when trying meet using JWT

i have configured JWT Token auth; when i try to start a new session and 2 users with correct JWT Token go to the same link, they cannot see each other and in prosody log i see

    May 26 23:34:32 mod_bosh        
    error   Traceback[bosh]: /usr/lib/prosody/util/stanza.lua:62: 
    invalid text value: expected string, got number

I use Prosody version 0.11.5

Can anyone help me?
Thanks and greetings

Did you find a solution for this. Having the same problem