Reproduce a i18next::translator: missingKey error

Initial question:
https://stackoverflow.com/questions/64394414/what-am-i-doing-wrong-with-setting-up-i18next-in-react-getting-a-i18nexttran

Error reproduced:

Fix missing "translation" key in resources (see commit)

All resource files should store strings under translation key:

{
+  "translation": {
      "selectAction": "Select Action",
      "workflow": "Workflow",
      "details": "Details"
+  }
}

Try it yourself

npm install
npm run build
npm start