jagracar / webgl-shader-examples Goto Github PK

I followed your guide.
But when I run grunt . It turn out a error:
Error: Cannot find module 'glslify-bundle'

And the command 'npm install -g glslify-bundle' didn't help.

$ grunt
....
Warning: 
You need to have Ruby and Sass installed and in your PATH for this task to work.
More info: https://github.com/gruntjs/grunt-contrib-sass
 Use --force to continue.

Aborted due to warnings.
$

After sudo apt install of ruby and sass in 64bit Raspberry Pi OS (based on debian) all works.