Swimbot Error

Traceback (most recent call last):
  File "/home/pi/.local/lib/python3.7/site-packages/discord/ext/commands/core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "SwimBot.py", line 39, in load
    bot.load_extension(extension_name)
  File "/home/pi/.local/lib/python3.7/site-packages/discord/ext/commands/bot.py", line 658, in load_extension
    raise errors.ExtensionAlreadyLoaded(name)
discord.ext.commands.errors.ExtensionAlreadyLoaded: Extension 'premium' is already loaded.