pm2 + socket.io

[lik0914]

Error: ENOENT, no such file or directory
at Object.exports.resolve (path.js:309:52)
at Function.Module._resolveLookupPaths (module.js:260:17)
at Function.Module._resolveFilename (module.js:328:31)
at Function.Module._load (module.js:280:25)
at Function._load (/usr/local/node_js/lib/node_modules/pm2/node_modules/pmx/lib/transaction.js:62:21)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Socket. (/data/www/emao.com/trunk/app/dealer/system/chat/app.js:236:9)
at Socket.emit (events.js:95:17)
at Socket.onevent (/usr/local/node_js/node_modules/socket.io/lib/socket.js:327:8)
Process status into errored. What reason?