Update main.py

main.py

@@ -26,20 +26,22 @@ app.add_middleware(
 line_bot_api = LineBotApi(os.environ["line_bot_api"])
 line_handler = WebhookHandler(os.environ["line_handler"])
 
-working_status = working_status = os.getenv("DEFALUT_TALKING", default = "true").lower() == "true"
+working_status = os.getenv("DEFALUT_TALKING", default = "true").lower() == "true"
 
 @app.get("/")
 def root():
      return {"title": "Echo Bot"}
 
 @app.post("/webhook")
-async def webhook(request: Request, x_line_signature: str = Header(None)):
+async def webhook(request: Request):
+    signature = request.headers['X-Line-Signature']
     body = await request.body()
     try:
-        line_handler.handle(body.decode("utf-8"), x_line_signature)
+        handler.handle(body.decode(),signature)
     except InvalidSignatureError:
-        raise HTTPException(status_code=400, detail="chatbot handle body error.")
-    return 'OK'
+        raise HTTPException(status_code=400, detail="SignatureError")
+    
+    return "ok"
 
 @line_handler.add(MessageEvent, message=TextMessage)
 def handle_message(event):