fix error in language code

app.py

@@ -51,8 +51,12 @@ def get_language_code(language_name):
     """
     Extracts the first two letters of the language code based on the language name.
     """
-    code = df.loc[df['name'] == language_name, 'code'].values[0]
-    return code[:2]
+    try:
+        code = df.loc[df['name'].str.lower() == language_name.lower(), 'code'].values[0]
+        return code
+    except IndexError:
+        print(f"Language name '{language_name}' not found.")
+        return None
 
 def translate_text(text, instructions=translatetextinst):
     """