ContractNotFound

No contract instance exists at the destination address; the account has no ContractInfoOf entry. Verify the dest address and that the contract was instantiated and has not been terminated.

Declared by the Contracts pallet; it classifies to the semantic code not_found.

Remediation

The referenced object is not on-chain; check the identifier

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