This is probably happening because you, like me, were using the old babel parser. Package babel-eslint has been deprecated since March of 2020.
The package was migrated to new repo, if you want to know more, I recommend you check Babel git.
Just change and install or update to the latest parser packaged in .eslintrc.js:
Old .eslintrc.js:
module.exports = {
parser: 'babel-eslint',
...
};
New .eslintrc.js
module.exports = {
parser: '@babel/eslint-parser',
...
};