Node Sass problem cause error

Need help please.
I have an ionic 3 project which I have to edit, when I run “ionic serve” or other ionic command, it shows below error:

Error: Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime (72)
[app-scripts] For more information on which environments are supported please see:
[app-scripts] Release v4.5.3 · sass/node-sass · GitHub
[app-scripts] at module.exports (/Users/sooweechai/Desktop/IonicProjects/ShunFaRouGuCha copy 13/node_modules/node-sass/lib/binding.js:13:13)
[app-scripts] at Object. (/Users/sooweechai/Desktop/IonicProjects/ShunFaRouGuCha copy 13/node_modules/node-sass/lib/index.js:14:35)
[app-scripts] at Module._compile (internal/modules/cjs/loader.js:1158:30)
[app-scripts] at Object.Module._extensions…js (internal/modules/cjs/loader.js:1178:10)
[app-scripts] at Module.load (internal/modules/cjs/loader.js:1002:32)
[app-scripts] at Function.Module._load (internal/modules/cjs/loader.js:901:14)
[app-scripts] at Module.require (internal/modules/cjs/loader.js:1044:19)
[app-scripts] at require (internal/modules/cjs/helpers.js:77:18)
[app-scripts] at Object. (/Users/sooweechai/Desktop/IonicProjects/ShunFaRouGuCha copy 13/node_modules/@ionic/app-scripts/dist/core/bundle-components.js:6:16)
[app-scripts] at Module._compile (internal/modules/cjs/loader.js:1158:30)

Search for help and try to rebuild the Node Sass : sudo npm rebuild node-sass, but got error again:

ake: *** [Release/] Error 1
gyp ERR! build error
gyp ERR! stack Error: make failed with exit code: 2
gyp ERR! stack at ChildProcess.onExit (/Users/sooweechai/Desktop/IonicProjects/ShunFaRouGuCha copy 13/node_modules/node-gyp/lib/build.js:258:23)
gyp ERR! stack at ChildProcess.emit (events.js:311:20)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)
gyp ERR! System Darwin 19.6.0
gyp ERR! command “/Users/sooweechai/.nvm/versions/node/v12.16.1/bin/node” “/Users/sooweechai/Desktop/IonicProjects/ShunFaRouGuCha copy 13/node_modules/node-gyp/bin/node-gyp.js” “rebuild” “–verbose” “–libsass_ext=” “–libsass_cflags=” “–libsass_ldflags=” “–libsass_library=”
gyp ERR! cwd /Users/sooweechai/Desktop/IonicProjects/ShunFaRouGuCha copy 13/node_modules/node-sass
gyp ERR! node -v v12.16.1
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
Build failed with error code: 1
npm ERR! errno 1
npm ERR! node-sass@4.5.3 postinstall: node scripts/build.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-sass@4.5.3 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

Don’t know what to do, somebody help please.

My environment:
Ionic CLI : 6.12.1 (/Users/sooweechai/.nvm/versions/node/v12.16.1/lib/node_modules/@ionic/cli)
Ionic Framework : ionic-angular 3.7.1
@ionic/app-scripts : 3.0.0

Cordova CLI : 10.0.0
Cordova Platforms : android 6.2.3, ios 4.4.0
Cordova Plugins : no whitelisted plugins (18 plugins total)

cordova-res (update available: 0.15.3) : 0.11.0
native-run (update available: 1.4.1) : 1.0.0

NodeJS : v12.16.1 (/Users/xxxxxxx/.nvm/versions/node/v12.16.1/bin/node)
npm : 6.14.3
OS : macOS Catalina
Xcode : Xcode 12.4 Build version 12D4e

As i can see you are using ionic-v3 along with NodeJS v12.16.1
i think you need to downgrade your NodeJS version (for example to LTS 8.12.0) please see Compatible node/npm versions

I’ll try later and thanks for you help.