PersistGate' cannot be used as a JSX component. Its instance type 'PersistGate' is not a valid JSX element.

Quick fix for this is to add the following to your package.json file

If you're using Yarn

..............
"resolutions": {
    "@types/react": "^17.0.39"
}
................

If you're using NPM

"overrides": {
  "@types/react": "17.0.39"
}

Ensure that the version is the same in your dependecies and dev dependencies list.

Finally execute yarn or npm install again so it will download the package.

And that's all, hope this helps in fixing your error.