Uncaught TypeError: Cannot read property 'options' of undefined at new Translate (translate.js:63)

I am not sure why this error is happening. Looks like something to do with the configuration of i18n.

The line at translate.js:63 is:

namespaces = namespaces || _this.i18n.options.defaultNS;

Where do the i18n options get configured? Am I configuring something wrong with my reducer?

[admangum]

Is your component wrapped in a I18nextProvider?

[BaggioWongHK]

What did it for me was exactly what @admangum suggested, literally wrap your component like so

<I18nextProvider i18n={i18n}>
          // your component
</I18nextProvider>

where i18n would be your i18nConfig. Not sure how helpful this is, but just wanted to add a comment in case it is to someone.