node error cannot find module already installed

Question

[root@zexu websocket_start]# npm ls -g installed
npm WARN ls doesn\'t take positional args. Try the \'search\' command
npm WARN websocket-server@1.4.04 package.json: bugs         


        

Answer 1

Have you installed the module with the -g option? I think that not every module is meant to be installed globally, instead, try installing it locally for the project you are creating (npm install), and check if the error persists.