minor fix

app.py

@@ -16,7 +16,7 @@ suggestion_searcher = SuggestionSearcher(collection_name=COLLECTION_NAME_SUGGEST
 ALLOWED_API_KEY = str(API_KEY)
 
 @app.get("/api/search")
-async def search(q: str, type: int, lt:str, offset: int):
+async def search(q: str, type: int, lt: str | None = None, offset: int = 0):
     query = q.lower()
     xss = nh3.clean(query)
     data = await doc_searcher.search(text=xss,type=type,law_type=lt,offset=offset)