try to fix image scope error

handler.py

@@ -31,17 +31,19 @@ class EndpointHandler:
         ]
 
     def __call__(self, data):
-        if isinstance(data, bytes):  # Correctly handle bytes input
+        image = None  # Initialize image to None
+
+        if isinstance(data, bytes):
             image = Image.open(io.BytesIO(data)).convert("RGB")
         elif isinstance(data, dict) and "inputs" in data:
             if isinstance(data["inputs"], bytes):
                 image = Image.open(io.BytesIO(data["inputs"])).convert("RGB")
-            # REMOVE the else block below. data["inputs"] is already bytes.
-            # else:  # This branch is unnecessary and causes the error
-            #     image = Image.open(io.BytesIO(data["inputs"].encode())).convert("RGB")  # Remove .encode()
         else:
             raise ValueError("Unsupported input format")
 
+        if image is None:  # Check if image was successfully loaded
+            raise ValueError("Could not load image from input data.")
+
         image_tensor = self.transform(image).unsqueeze(0)
 
         with torch.no_grad():