"start": "cross-env NODE_ENV=production node server",heroku config:set NPM_CONFIG_PRODUCTION=falseheroku logs --tail --app fast-lake-29656npm startcross-env NODE_ENV=development node server", и также вывел ошибку save(e) {
e.preventDefault();
let content = {
name: document.getElementById('name').value,
price: document.getElementById('price').value
};
...
}<Button bsStyle="primary" onClick={(e) => this.save(e)} type="submit">Save</Button>