Failed at the node-sass@4.9.4 postinstall script

[alanrostin]

os: ubuntu 20.04
npm version: 6.14.6
node version: 12.18.3

After cloning repository and executing npm install, I get these errors:

• gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
• npm ERR! Failed at the node-sass@4.9.4 postinstall script.

[r-parikh]

Ubuntu 20.04 doesn't come pre-installed with Python2 anymore. You can install Python2 and test. With Python3, you'll have to install node-gyp separately and the error occurs at node-sass, for which you'll need to install node-sass v5 which is not compatible with the dependency version specified in package.json.

TL;DR version: install python2