hey,
I followed your instructions and when I enter the last command I have a set of error message:

error:

at new Script (vm.js:51:7)
at NativeCompileCache._moduleCompile (/usr/lib/node_modules/pm2/node_modules/v8-compile-cache/v8-compile-cache.js:226:18)
at Module._compile (/usr/lib/node_modules/pm2/node_modules/v8-compile-cache/v8-compile-cache.js:172:36)
at Object.Module._extensions…js (internal/modules/cjs/loader.js:665:10)
at Module.load (internal/modules/cjs/loader.js:566:32)
at tryModuleLoad (internal/modules/cjs/loader.js:506:12)
at Function.Module._load (internal/modules/cjs/loader.js:498:3)
at Module.require (internal/modules/cjs/loader.js:598:17)
at require (/usr/lib/node_modules/pm2/node_modules/v8-compile-cache/v8-compile-cache.js:159:20)
at Object. (/usr/lib/node_modules/pm2/node_modules/chalk/index.js:4:21)