discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 'Bot' object has no attribute 'join_voice_channel' code example

Example: The Command raised an exception: AttributeError: 'VoiceState' object has no attribute 'voice_channel'

In the rewrite version, version 1.0, VoiceState.voice_channel was changed to VoiceState.channel.