Install npm packages with npm install with error

[wuming123057]

I delete the import_config "dev.secret.exs" in dev.exs files.
And I install npm packages with npm install with error
module.js:328
throw err;
^

Error: Cannot find module 'npmlog'
at Function.Module._resolveFilename (module.js:326:15)
at Function.Module._load (module.js:277:25)
at Module.require (module.js:354:17)
at require (internal/module.js:12:17)
at /usr/local/lib/node_modules/npm/bin/npm-cli.js:20:13
at Object. (/usr/local/lib/node_modules/npm/bin/npm-cli.js:76:3)
at Module._compile (module.js:398:26)
at Object.Module._extensions..js (module.js:405:10)
at Module.load (module.js:344:32)
at Function.Module._load (module.js:301:12)

[wuming123057]

This is my npm errors!