Voice log shows blank embed if user starts/ends a stream

[OnlyOneCookie]

Describe the bug
The voice log shows a blank embed as soon as the user starts/ends the stream in a voice channel.
It does not show that the user has ended the stream while streaming and directly disconnecting the voice channel. (see Log screenshot)

To Reproduce
Steps to reproduce the behavior:

1. Set d!log voice enable to a log channel
2. Connect to a voice channel.
3. Start the stream in the voice channel.
4. End the stream in the voice channel.
5. Start the stream in the voice channel.
6. Disconnect from the voice channel.

Expected behavior
It should show that the user has started or ended a stream in a voice channel and while streaming and directly disconnecting it should show that he has been streaming.

Screenshots

Log

1. Log: Connected to a voice channel.
2. Log: Stream has been started in a voice channel.
3. Log: Stream has been ended in a voice channel.
4. Log: Stream has been started in a voice channel.
5. Log: Disconnected from a voice channel without logging that the user has been ended the stream.

Discord (please complete the following information):

• OS: Windows 10 64-Bit (10.0.19041)
• Version: Canary 68594 (ce4b538)