FailedToExtractRuntimeVersion

The new runtime code passed to set_code did not yield a readable version: calling Core_version or decoding RuntimeVersion failed. Check that the submitted blob is a valid, complete runtime wasm and not truncated or compressed incorrectly.

Declared by the System 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 FailedToExtractRuntimeVersion.