my chuks files and manifest is 404 error displayed. why is it?how do fix it?

chamod.online/:1

   GET https://chamod.online/react-portfolio/static/js/2.6304c2ba.chunk.js net::ERR_ABORTED 404 (Not Found)

chamod.online/:1

   GET https://chamod.online/react-portfolio/static/js/main.62713049.chunk.js net::ERR_ABORTED 404 (Not Found)

chamod.online/:1

   GET https://chamod.online/react-portfolio/static/css/main.804561d7.chunk.css net::ERR_ABORTED 404 (Not Found)

chamod.online/:1 Error handling response: Error: Failed to construct ‘WebSocket’: The URL ‘ws/ws’ is invalid.
at init (chrome-extension://fiegdmejfepffgpnejdinekhfieaogmj/reload.js:22:18)
at chrome-extension://fiegdmejfepffgpnejdinekhfieaogmj/reload.js:65:13
manifest.json:1

   GET https://chamod.online/react-portfolio/manifest.json 404 (Not Found)

manifest.json:1 Manifest: Line: 1, column: 1, Syntax error.

this image displays i above mentioned request .