> For the complete documentation index, see [llms.txt](https://jen-hsuan-hsieh.gitbook.io/javascript-node-js/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://jen-hsuan-hsieh.gitbook.io/javascript-node-js/chapter2-nodejs/23nodejs-debug-message.md).

# 2.3.Node.js debug message

## 3.Node.js debug message

## This section contain the following items:

* 1.Allow node.js server to output log
* 2.Allow node.js perform GC collection
* 3.\[Debug message]Error: CERT\_UMTRUSTED
* 4.\[Debug message]Error: npm ERR! network getaddrinfo ENOTFOUND registry.npmjs.org registry.npmjs.org:443
* 5.\[Debug message]-bash: /usr/local/bin/npm: No such file or directory
* 6.\[Debug message]const Hoek = require('hoek'); ^^^^^ SyntaxError: Use of const in strict mode.