I created new RN project and installed the sdk. I still have no luck. 
pls see my node and npm versions.
sorry for stupid question but how do i know if my npm is corrupted?
i got the error when I import this:
import Livechat from '@rocket.chat/sdk/clients/Livechat';
On sdk, running npm install doesn’t seem to install paho-mqtt and yarn does.
hi @diegolmello @tasso.evangelista, it worked using yarn. Thank you both! 
I have another concern though… Hope you can still help me… I can now get the config, register user, get the room and send a message. Now I am trying to implement the new message observer and I can’t get it to work. Maybe there is missing on my end which I don’t know.
Is this the observer for new message?
SDK.onMessage((message) => {
console.log('Message = ', message);
});
What I am doing is after SDK.config() i call SDK.onMessage() and it does not work… do I have to call SDK.subscribeRoom() first?
Appreciate your help. Thanks
If I understand it right, in order for the observers like the New Message observer SDK.onMessage() to work, I need to connect first and subscribe to the room, is that correct?
But when I do SDK.connect() I got this error: Malformed calls from JS: field sizes are different.
This is my sample code:
async initRoom(){
if(!stream){
stream = await SDK.connect();
}
SDK.unsubscribeAll();
SDK.subscribeRoom(roomId);
}
and I am using now the @rocket.chat/sdk@1.0.0-alpha.21
Do you have any idea @diegolmello @tasso.evangelista about the error?
Hi @diegolmello @jmagdada I have taken the git repo of react native rocket chat and after doing npm install the project is build successfully but I also receive paho-mqtt error. And I am not really sure where to run this yarn command… Can you please tell me exactly where to run this command?
@owais The repo uses yarn. npm won’t work.
yarn is a package manager just like npm.
You must install yarn before.
@jmagdada can you try again in @rocket.chat/sdk@1.0.0-alpha.25?
This issue was fixed.
Yes diego… Thanks for your help… I was trying yarn in project root directory… Now it is working fine after running the command in node_modules/@rocket.chat/sdk.