Update app.py

app.py

@@ -404,7 +404,7 @@ async def test3(ctx):
 @bot.command()
 async def read_csv(ctx):
     if ctx.author.id == 811235357663297546:  
-        async for message in ctx.channel.history(limit=1):
+        async for message in ctx.channel.history(limit=10):
             if message.attachments:
                 attachment = message.attachments[0]
                 if attachment.filename.endswith('.csv'):