Update frontend/next-i18next.config.js

frontend/next-i18next.config.js

@@ -1,7 +1,9 @@
+const path = require('path');
+
 module.exports = {
   i18n: {
     defaultLocale: 'en',
     locales: ['en', 'ja', 'zh'],
   },
-  localePath: typeof window === 'undefined' ? require('path').resolve('./public/locales') : '/locales',
+  localePath: path.resolve('./locales'),
 };