make better error handling

app.py

@@ -51,7 +51,7 @@ def main():
 
 @app.post("/items")
 #@limiter.limit("3/hour")  # must have parameter request
-async def read_items(request: Request, type_of_filters: str = Form(...)):
+async def read_items( type_of_filters: str = Form(...)):
     return {"items": str(type_of_filters)}