创建群组的时候出现异常

EMGroupOptions option = new EMGroupOptions();
option.maxUsers = 500;
option.inviteNeedConfirm = true;
option.style = EMGroupManager.EMGroupStyle.EMGroupStylePrivateMemberCanInvite;
String reason = getString(R.string.em_group_new_invite_join_group, EaseConstant.EXTRA_CONVERSATION_ID, "渣渣灰");

try {
    EMClient.getInstance().groupManager().createGroup("群聊", names, listName, reason, option);
} catch (HyphenateException e) {
    e.printStackTrace();
}