fix: bugs

Signed-off-by: ivelin <ivelin.eth@gmail.com>

app.py

@@ -55,6 +55,7 @@ def process_refexp(image: Image, prompt: str):
     print(
         fr"predicted decoder sequence before token2json: {html.escape(sequence)}")
     bbox = processor.token2json(sequence)
+    bbox = bbox['target_bounding_box']
     print(f"predicted bounding box: {bbox}")
 
     print(f"image object: {image}")