TypeError: Cannot read property 'appendChild' of null in REACT

[alejandroburgos]

_addOption node_modules/pselect.js/dist/pselect.js:134 131 | optionElement.setAttribute('selected', ''); 132 | optionElement.setAttribute('disabled', ''); 133 | }

134 | parentElement.appendChild(optionElement); 135 | } 136 | 137 | module.exports = Pselect;

Haga lo que haga todo me devuelve un error NULL.