Common Deployment Errors

Back to Deploying Contracts

Overview

Error	Cause	Solution
FAULT on deploy	Manifest permissions insufficient for constructor logic	Add required permissions or use --manifest-permissions
contract already exists	Contract with same hash already deployed	Use update instead of deploy, or change the sender account
insufficient GAS	Deployer account lacks GAS	Transfer more GAS to the deployer
invalid NEF	Corrupted or incompatible NEF file	Rebuild with cargo build --release && neo-solc ...
manifest validation failed	Manifest has invalid fields	Check features is {}, verify JSON structure