Update app.py

app.py

@@ -302,8 +302,9 @@ with gr.Blocks(title="Fuel Bill Image Generator") as demo:
             
             gr.Markdown("### Bill Date Range")
             with gr.Row():
-                min_bill_date_input = Calendar(label="Min Bill Date", value=datetime.date(2024, 1, 1))
-                max_bill_date_input = Calendar(label="Max Bill Date", value=datetime.date.today())
+                min_bill_date_input = Calendar(label="Min Bill Date", value="2024-01-01")
+                max_bill_date_input = Calendar(label="Max Bill Date", value=datetime.date.today().strftime("%Y-%m-%d"))
+
 
             gr.Markdown("## 🖼️ Background & Logo Selection")
             gr.Markdown("### Background Texture")