Error: Cannot find module 'postcss-import'"

[rmasonhx12]

cloned repo -- did steps to set upstream and forked repo in synch -- yarn, yarn build, yarn dev with following output

Failed to compile
./src/app/globals.css.webpack[javascript/auto]!=!./node_modules/next/dist/build/webpack/loaders/css-loader/src/index.js??ruleSet[1].rules[4].oneOf[12].use[2]!./node_modules/next/dist/build/webpack/loaders/postcss-loader/src/index.js??ruleSet[1].rules[4].oneOf[12].use[3]!./src/app/globals.css
Error: Cannot find module 'postcss-import'
Require stack:

• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/build/webpack/config/blocks/css/plugins.js
• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/build/webpack/config/blocks/css/index.js
• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/build/webpack/config/index.js
• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/build/webpack-config.js
• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/server/dev/hot-reloader.js
• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/server/dev/next-dev-server.js
• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/server/next.js
• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/server/lib/render-server.js
• /Users/rmasonh/Desktop/myProject/carbon-tutorial-nextjs/node_modules/next/dist/compiled/jest-worker/processChild.js
  at Array.map ()
  This error occurred during the build process and can only be dismissed by fixing the error.

[rmasonhx12]

I was able to correct problem --

1. yarn add postcss-import --dev
2. yarn add postcss.config.js
   module.exports = {
   plugins: {
   'postcss-import': {},
   'autoprefixer': {},
   // other plugins specified as key-value pairs
   },
   };
3. yarn add autoprefixer --dev

restart server -- yarn dev -- Success Compiled

~~ Please update project as clone needs the postcss import and autoprefixer to run.

[rmasonhx12]

~~ Please update project as clone needs the postcss import and autoprefixer to run. SEE ABOVE ISSUE WHICH I CLOSED BUT FORGOT TO WAIT FOR RESPONSE -- REOPENED FOR THIS REASON