fix rich menu and null nft

main.py

@@ -91,7 +91,7 @@ def handle_follow(event):
 # message handler
 @handler.add(MessageEvent, message=TextMessage)
 def message(event):
-    if '我要發送' in event.message.text:
+    if '我要發送' or 'NFT收藏' in event.message.text:
         button_template_message = ButtonsTemplate(
             title=' ',
             text='點擊並打開收藏的NFT，可以選擇想要發送的NFT給對方！',
@@ -214,7 +214,7 @@ def shop(userid):
     # db connect
     db = dataset.connect('mysql://choozmo:pAssw0rd@db.ptt.cx:3306/arkcard?charset=utf8mb4')
 
-    sql = 'SELECT * FROM arkcard.nft WHERE userid IS NULL LIMIT 5'
+    sql = 'SELECT * FROM arkcard.nft WHERE userid IS NULL OR userid="" LIMIT 5'
     result = db.query(sql)
     rows = {}
     i = 0