cannot load the frontend after building the production file using react build scripts, I have been stuck with this all day , if anyone can help with it , please write the solution in the comments

[bary24]

Error: Minified React error #321; visit https://reactjs.org/docs/error-decoder.html?invariant=321 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at Object.ai (main.d5cd5a52.js:2:329928)
at t.useState (main.d5cd5a52.js:2:422732)
at main.d5cd5a52.js:2:471593
at oi (2.acf50103.chunk.js:2:164940)
at Wu (2.acf50103.chunk.js:2:217398)
at Pl (2.acf50103.chunk.js:2:204572)
at Sl (2.acf50103.chunk.js:2:204500)
at Ol (2.acf50103.chunk.js:2:204363)
at yl (2.acf50103.chunk.js:2:201329)
at 2.acf50103.chunk.js:2:150708
uu @ react-dom.production.min.js:216

[valentinesamuel]

have you tried reinstalling the node_modules folder
OR
you compare your code with that of the instructor

[ShohanMir]

Provably you importing useEffect from the wrong place. Import useEffect:
import React, {useEffect} from 'react';

[JamesHHoustonII]

This is still an issue, anyone find an answer?