Update app.py

app.py

@@ -68,7 +68,7 @@ def respond(
     message: str,
     history: List[Tuple[str, str]],
     model: str = "gemma_3_800M_sft_v2_translation-kazparc_latest.gguf",
-    direction: str,
+    direction: str = "English to Kazakh",
     max_tokens: int = 1024,
     temperature: float = 0.7,
     top_p: float = 0.95,