TypeError: props.i18n.changeLanguage is not a function

I’ve updated to i18next": "^13.0.0 and started to get this error… not sure if it’s a languageDetector or i18next-react issue?

TypeError: props.i18n.changeLanguage is not a function
initSSR
node_modules/react-i18next/dist/es/utils.js:46
  43 |   }
  44 | 
  45 |   if (!initializedLanguageOnce && props.initialLanguage) {
> 46 |     props.i18n.changeLanguage(props.initialLanguage);
  47 |     initializedLanguageOnce = true;
  48 |   }
  49 | } // --------------

using typescript: 3.2.2