Trying to get cooldown timer working test

EnsoBot.py

@@ -18,7 +18,7 @@ async def best(message):
     # we do not want the bot to reply to itself
     if message.author == client.user:
         return
-    if message.content.startswith('!best'):
+
     myid = '<@154840866496839680>'
     await client.send_message(message.channel, ' : %s is the best ' % myid)
 
@@ -164,11 +164,5 @@ async def on_command_error(ctx, error):
     if isinstance(error, commands.CommandOnCooldown):
         await ctx.send(f'That command is on cooldown. Try again in {error.retry_after:,.2f} seconds.')
 
-#Bot Event for handling missing requirements error
-@client.event
-async def on_command_error(ctx, error):
-    if isinstance(error, commands.MissingRequiredArgument):
-        await ctx.send('Please input the correct amount of arguments')
-
 
 client.run('NzE2NzAxNjk5MTQ1NzI4MDk0.XtWFiw.KZrh9Tkp9vTY9JYSgZfpg2P4mlQ')