add new user through rest api return 500 error

this ajax calling from http://demoshareslate.hostingxperts.in/feed  response getting 500 error

$.ajax({
method: "POST",
url: "http://103.118.157.16:5080/openmeetings/services/user?sid=1e97375f-fb6a-4e71-8b81-7fb4b99eb211&user=" + escape(JSON.stringify({
address:

,

externalId: "69",
externalType: "demoShare",
firstname: "demouser69",
languageId: "6",
lastname: "testdemo69",
login: "testdemo69",
password: "ABCdefg1*1",
timeZoneId: "Asia/Kolkata",
type: "user",
})) + '&confirm=false',
data: {},
dataType: "json",
success: function(data) {
if(data)
{
}
}
});