Critical issue: App freezes after deployment

[aish110]

Unable to interact with the application after successfully deploying it to respective environments. It's like the app is frozen and we can see the below error in the console.
Failed to load plugin 'jsx-a11y' declared in 'package.json » eslint-config-react-app': Unexpected token =

App works fine in localhost though.
Facing this issue from the past few days, from Saturday (Dec 3rd, 2022) to be precise. The deployment on Friday was fine, and we had not added or updated any packages after Friday, or before it as a matter of fact.
We could see eslint-config-react-app v6.0.0 as a dependent library for react-scripts v4.0.3 in our package-lock.json.
If anyone has any fix/suggestions please help.

Attaching the console error screenshot for reference.

[Lsnsh]

Same react-script@4.0.3

I meet same error, but during npm run build, and use NodeJS v10.x. It can work normally before December 2022.

Creating an optimized production build...
Failed to compile.

Failed to load plugin 'jsx-a11y' declared in '.eslintrc.js » eslint-config-react-app': Unexpected token =

If i use NodeJS v14.x, for my project, it can work normally,

I am also very curious about what changes have caused this problem(Failed to load plugin 'jsx-a11y' declared in ...).

[aish110]

Yes.. we updated the node version to v12.X and now it's working fine for us too. :)