Update app.py

app.py

@@ -50,9 +50,10 @@ async def on_ready():
     print("------")
 
 
-@bot.event
-async def on_member_join(member):
-    await member.send('Private message')
+@client.event
+async def on_member_join(mb):
+    channelv0 = discord.utils.get(mb.guild.channels, name = "👋wellcome-goodbye")
+    await channelv0.send(f"Welcome to server, <@{mb.id}>")
 
 
 # running in thread