Upgrading to Next 11 causes "Unexpected token / in JSON at position 0"

[HassaanShah016]

What version of Next.js are you using?

11

What version of Node.js are you using?

15.14

What browser are you using?

Chrome

What operating system are you using?

Windows

How are you deploying your application?

Next Start

Describe the Bug

Dependency List
{ "name": "frontend-proj", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "dev": "next dev", "build": "next build", "start": "next start" }, "keywords": [], "author": "", "license": "ISC", "dependencies": { "@fortawesome/fontawesome-svg-core": "^1.2.35", "@fortawesome/free-solid-svg-icons": "^5.15.3", "@fortawesome/react-fontawesome": "^0.1.14", "@iktakahiro/markdown-it-katex": "^4.0.1", "@sendgrid/mail": "^7.4.4", "bootstrap": "^4.6.0", "cogo-toast": "^4.2.3", "date-fns": "^2.22.1", "es6-promise": "^4.2.8", "highlight.js": "^10.7.3", "isomorphic-fetch": "^3.0.0", "js-cookie": "^2.2.1", "jsonwebtoken": "^8.5.1", "katex": "^0.12.0", "markdown-it": "^12.0.6", "markdown-it-emoji": "^2.0.0", "nanoid": "^3.1.23", "next": "^11.0.0", "nprogress": "^0.2.0", "prop-types": "^15.7.2", "query-string": "^6.14.1", "quill-better-table": "^1.2.10", "react": "^17.0.2", "react-dom": "^17.0.2", "react-google-login": "^5.2.2", "react-icons": "^4.2.0", "react-markdown-editor-lite": "^1.2.4", "react-multi-carousel": "^2.6.3", "react-quill": "^2.0.0-beta.2", "react-render-html": "^0.6.0", "react-timeout": "^2.0.1", "reactstrap": "^8.9.0", "sass": "^1.35.1", "styled-components": "^5.3.0" }, "devDependencies": { "@svgr/cli": "^5.5.0", "babel-plugin-inline-react-svg": "^2.0.1", "babel-plugin-styled-components": "^1.12.0" } }

Upgrading to Next 11 causes "Unexpected token / in JSON at position 0":

Error - ./node_modules/next/dist/client/dev/amp-dev.js
SyntaxError: Unexpected token / in JSON at position 0
at JSON.parse ()

Expected Behavior

The upgrade procedure should work out of the box. As the same application was working fine with NextJs 10.2 release

To Reproduce

The upgrade procedure should work out of the box. As the same application was working fine with NextJs 10.2 release

[shenghanqin]

Me too.

[myeongwon]

Me too 222

[timneutkens]

Duplicate of #26163

[HassaanShah016]

@timneutkens What's the solution ?

[balazsorban44]

This issue has been automatically locked due to no recent activity. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.