[Bug]: EpisodeNotExists error on open episode twice

[bigfoodK]

Expected Behavior

can open episode

Actual Behavior

It's okay at first open, but the second time, EpisodeNotExists error occurs.

Steps to Reproduce

1. open episode
2. reload
3. open same episode

Other Info

Ok(None) returned here.

namseent/luda-editor/new-server/server/src/api/episode_editor/join_episode_editor.rs

Lines 32 to 35 in 321bc9a

	let episode = db
	.get(EpisodeDocGet { id: episode_id })
	.await?
	.ok_or(Error::EpisodeNotExists)?;

[bigfoodK]

You can retry once after

1. turn off the server
2. leave it for more than five minutes
3. turn on the server

However, EpisodeNotExists error will occur if you try after restarting the server immediately