Discord link invalid (mail0.link/discord = "Invite Invalid")

Received error:

```
Invite Invalid
This invite may be expired, or you might not have permission
to join.
```

Started by clicking the initial URL seen on top of Github:

https://mail0.link/discord

And that shortlink service autoredirected here, the location of the error:

https://discord.com/invite/mail0

Thank you!