Update app.py

app.py

@@ -25,13 +25,23 @@ def chat_fn(message, history):
         yield f"Hata: {str(e)}"
 
 def image_fn(prompt):
-    if not prompt: return None
+    if not prompt: 
+        return None
+    
+    # 1. Deneme: En hızlı model (SDXL Turbo)
     try:
-        # Görsel üretme (SDXL Turbo)
-        return client.text_to_image(prompt, model="stabilityai/sdxl-turbo")
+        image = client.text_to_image(prompt, model="stabilityai/sdxl-turbo")
+        return image
     except Exception as e:
-        print(f"Görsel Hatası: {e}")
-        return None
+        print(f"SDXL Turbo Hatası: {e}. Yedek modele geçiliyor...")
+        
+        # 2. Deneme: En kararlı yedek model (Stable Diffusion v1.5)
+        try:
+            image = client.text_to_image(prompt, model="runwayml/stable-diffusion-v1-5")
+            return image
+        except Exception as e2:
+            print(f"Yedek Model Hatası: {e2}")
+            return None
 
 # Arayüz
 with gr.Blocks(theme=gr.themes.Soft(primary_hue="blue")) as demo: