update

app.py

@@ -237,7 +237,7 @@ def process_prompt(prompt, document, lang="ch"):
 
     url = f"https://aip.baidubce.com/rpc/2.0/nlp-itec/poc/docprompt?access_token={access_token}"
 
-    r = requests.post(url, json={"doc": img_base64(document), "prompt": [prompt], "lang": lang})
+    r = requests.post(url, json={"doc": img_base64(document).decode(), "prompt": [prompt], "lang": lang})
     response = r.json()
     
     predictions = response['result']