Page Not Found while deployment

I am using React.JS and it published successfully but could not deploy it shows " Page Not Found Looks like you’ve followed a broken link or entered a URL that doesn’t exist on this site" Everything looks fine except for deploy.

Deployed site


Deploy log
1:20:14 PM: Build ready to start
1:20:16 PM: build-image version: b0258b965567defc4a2d7e2f2dec2e00c8f73ad6
1:20:16 PM: build-image tag: v3.4.1
1:20:16 PM: buildbot version: bca3bbf1ce7c7ca2e2192b1683becc1d98c88c5b
1:20:16 PM: Fetching cached dependencies
1:20:16 PM: Failed to fetch cache, continuing with build
1:20:16 PM: Starting to prepare the repo for build
1:20:16 PM: No cached dependencies found. Cloning fresh repo
1:20:16 PM: git clone
1:20:17 PM: Preparing Git Reference refs/heads/master
1:20:18 PM: No build command found, continuing to publishing
1:20:18 PM: Starting to deploy site from ‘/’
1:20:18 PM: Creating deploy tree
1:20:18 PM: Creating deploy upload records
1:20:19 PM: 0 new files to upload
1:20:19 PM: 0 new functions to upload
1:20:19 PM: Starting post processing
1:20:19 PM: Post processing - HTML
1:20:19 PM: Post processing - redirect rules
1:20:19 PM: Post processing - header rules
1:20:19 PM: Finished processing build request in 3.030603242s
1:20:19 PM: Post processing done
1:20:19 PM: Site is live

@Harish-HRX Sounds as if you have built your site into a subfolder. Does this information help?