Update app.py

app.py

@@ -34,7 +34,7 @@ def add_dark_noise(image):
 
 def apply_cartoon_filter(image):
     # Convert to OpenCV format
-    img_rgb = np.array(image)
+    img_rgb = np.array(image).astype(np.uint8)
     img_gray = cv2.cvtColor(img_rgb, cv2.COLOR_RGB2GRAY)
     img_gray = cv2.medianBlur(img_gray, 5)
     edges = cv2.adaptiveThreshold(img_gray, 255, cv2.ADAPTIVE_THRESH_MEAN_C, cv2.THRESH_BINARY, 9, 9)