add api to navigateFallbackWhitelist for google auth to work, finally

react/config/webpack.config.prod.js

@@ -314,7 +314,7 @@ module.exports = {
       navigateFallback: `${publicUrl}/index.html`,
       // Ignores URLs starting from /__ (useful for Firebase):
       // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
-      navigateFallbackWhitelist: [/^(?!\/__).*/],
+      navigateFallbackWhitelist: [/^(?!\/__).*/, /\/api\//],
       // Don't precache sourcemaps (they're large) and build asset manifest:
       staticFileGlobsIgnorePatterns: [/\.map$/, /asset-manifest\.json$/],