WithdrawFailed

Withdrawing the transaction fee from the sender's mapped account failed even though the balance check passed, e.g. due to locks, holds, or existential deposit constraints. Check the account's locks and its free versus withdrawable balance.

Declared by the EVM pallet; it classifies to the semantic code insufficient_balance.

Remediation

Fund the signing account or reduce the amount; check with btcli wallet balance

The same explanation is available in the terminal: btcli explain WithdrawFailed.