Errors/Chain errors
BlockDurationTooShort
Check the argument values against the operation schema
The requested end block is fewer than MinimumBlockDuration blocks after the current block. Compare end minus the current block number against the MinimumBlockDuration pallet constant when calling create or update_end.
Declared by the Crowdloan pallet; it classifies to the semantic code invalid_argument.
Remediation
Check the argument values against the operation schema
The same explanation is available in the terminal: btcli explain BlockDurationTooShort.