SB-MSG-204Nothing to catch up on
What happened
No messages were found in the range you asked for. Usually the range is narrower than you meant, or everyone in it opted out.
What to do
Widen the range, or pick a different channel.
Still stuck?
The message that showed you this code also carries a short trace id — something like trace f3a9c2. Paste the whole footer line into the support server and your exact request can be looked at directly. Never paste an API key or private message content.