Message
The network has progressed past the last block for which this transaction could have been committed.
What it means
The transaction's blockhash expired (lastValidBlockHeight passed) before it was confirmed. It can never land and must be rebuilt.
What to do
- Fetch a fresh blockhash, rebuild, re-sign and resend with a competitive priority fee.
- Resend the signed transaction every second or two until it confirms or expires, instead of sending once.