https://github.com/ethereum-optimism/optimism/blob/a70a4e3e130c2c8ae54d72f6a0baca6927d252ae/op-node/rollup/derive/system_config.go#L73
this line references the deposit event instead of the config update event. this is simply an error message, and does not effect control flow logic, but it could confuse developers debugging errors in the future.