Fix: Add explicit language config for .Site.IsMultilingual

config.toml

@@ -3,6 +3,13 @@ languageCode = "en-us"
 title = "My New Hugo Site"
 theme = "lightbi" # Using the LightBi theme
 
+DefaultContentLanguage = "en-us" # Explicitly set the default
+
+[languages]
+  [languages."en-us"]
+    languageName = "English"
+    weight = 1
+
 # Enable syntax highlighting
 pygmentsCodeFences = true
 pygmentsUseClasses = true