socket-chat | : love_letter : Its training chat on Materialize , express | Socket library

I have been doing javascript for a while and decided to start node.js.
I am running node.js and express on a raspberry pi (but I doubt this is the root of the problem).
I am making a chat app with socket.io, and the instructions said to create a package.json:

I'm trying to build my project that uses boost beast library with cmake. When I use only boost asio library everything builds okay. But when I add boost/beast/http.hpp header when cmake gives a huge amount of errors.

CMake file:

I am trying to build a gitlab pipeline to build a docker image from a java app. I have two artifacts, that I would like to pass between the build stages... One file (build_result.txt) is found an uploaded, but the other, (chat.jar) cannot be found. But, both files are in the same directory. Is there a size or extension limit for uploading files as artifacts?

I am trying to create a WebSocket client using React. I have adapted code from https://github.com/bitlabstudio/blogpost-react-websocket-chat/blob/master/frontend/src/Chat.js to create a WebSocket listener component as follows: