mm-develop-merge branch is deployed at
https://beta-community-app.topcoder.com/challenges/30074211/submit
When I submit the zip file it shows this console error, and submission is rejected

Instruction to run an app in production mode
rm -rf node_modules
npm i
npm run build
npm start
Check Deployment and Execution section in the doc for details
https://github.com/topcoder-platform/community-app/blob/develop/README.md
Create PR for changes
Repos :
https://github.com/topcoder-platform/community-app/tree/mm-develop-merge