fix: Fixing bug where Strapi UI is crashing when no locale is found

admin/src/index.js

@@ -52,6 +52,16 @@ export default {
       locales.map((locale) => {
         return import(
           /* webpackChunkName: "config-sync-translation-[request]" */ `./translations/${locale}.json`
+        )
+          .then(({ default: data }) => {
+            return {
+              data: prefixPluginTranslations(data, pluginId),
+              locale,
+            };
+          })
+          .catch(() => {
+            return import(
+              /* webpackChunkName: "config-sync-translation-[request]" */ `./translations/en.json`
             )
               .then(({ default: data }) => {
                 return {
@@ -65,6 +75,7 @@ export default {
                   locale,
                 };
               });
+          });
       }),
     );