Update app.py

app.py

@@ -88,7 +88,7 @@ def generate_image(prompt, input_image, low_threshold, high_threshold, strength,
     print(pipe.get_active_adapters())
 
     ## execute if an image is provided
-    if isinstance(input_image, type(None)):
+    if not isinstance(input_image, type(None)):
         # Apply edge detection
         edge_detected = apply_canny(input_image, low_threshold, high_threshold)