try to fix

Dockerfile

@@ -8,4 +8,4 @@ RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
 COPY . .
 
-CMD ["gunicorn","-b", "0.0.0.0:7860", "main:app"]
+CMD ["gunicorn","-b", "0.0.0.0:7860", "main:app"]

main.py

@@ -3,9 +3,9 @@ from flask import Flask, request, abort, send_from_directory
 import markdown
 from bs4 import BeautifulSoup
 
-from linebot.v3 import (
-    WebhookHandler
-)
+# from linebot.v3 import (
+#     WebhookHandler
+# )
 from linebot.v3.exceptions import (
     InvalidSignatureError
 )
@@ -20,7 +20,7 @@ from linebot.v3.webhooks import (
     MessageEvent,
     TextMessageContent
 )
-from linebot import LineBotApi
+from linebot import LineBotApi, WebhookHandler
 from linebot.models import TextSendMessage
 
 import os