Removed invalid code in getLanguageFileDescription,When the language is not discovered, it will use the built-in language fallback mechanism to fall back,At the same time, we also fix the issue that using language in the server does not save the settings of the server side locale

src/main/resources/languages/en-US.json

@@ -191,6 +191,7 @@
     "language": {
       "current_language": "current language is %s",
       "language_changed": "language changed to %s",
+      "language_not_found": "currently, server does not have that language: %s",
       "description": "display or change current language"
     },
     "list": {