how to fix this error - Delete 'CR' Prettier/Prettier

run this command in Terminal

yarn run lint --fix!

or

add this line in eslintrc - "prettier/prettier": ["warn", {"endOfLine": "auto"}],

{
  "extends": [
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "react-app",
    "react-app/jest",
    "prettier"
  ],
  "plugins": ["@typescript-eslint", "prettier"],
  "parser": "@typescript-eslint/parser",
  "rules": {
    "prettier/prettier": ["warn",  {"endOfLine": "auto"}], 
    "testing-library/prefer-screen-queries": "error",
    "testing-library/no-manual-cleanup": "error",
    "testing-library/prefer-wait-for": "error",
    "testing-library/no-await-sync-events": "error",
  }
}

or

you can add this line to your .prettierrc

"endOfLine": "auto"