How to resolve service unavailable error when trying to send file using strophe.ibb.js

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1

converse.connection.ibb.open(‘gowthaman"’,converse.connection.sid,‘4096’,functio n(error,success){

console.log(’…error…’,error);

console.log(’…success…’,success);

});

i get the following error : Error: service-unavailable

Is it possible to send file using strophe.ibb.if you provide with some working example it will be more helpful

thanks