decode error for U8a

[alanpoon]

RPC-CORE: getMetadata (block: Hash): Metadata:: createType(Metadata):: U8a: failed on 'MagicNumber':: U8a: failed on 'MetadataEnum':: Unable to create Enum via index 8, in V0, V1, V2, V3, V4, V5, V6, V7
API/DECORATOR: Error: FATAL: Unable to initialize the API: getMetadata (block: Hash): Metadata:: createType(Metadata):: U8a: failed on 'MagicNumber':: U8a: failed on 'MetadataEnum':: Unable to create Enum via index 8, in V0, V1, V2, V3, V4, V5, V6, V7
at EventEmitter.Init._onProviderConnect

node: https://github.com/cennznet/cennznet/tree/feature/60-add-cennzx
frontend dependencies: "dependencies": {
"@cennznet/crml-attestation": "^0.20.7",
"@cennznet/crml-cennzx-spot": "^0.20.7",
"@cennznet/crml-generic-asset": "^0.20.7",
"@cennznet/types": "^0.20.7",
"@plugnet/api": "^0.90.104",
"@plugnet/api-metadata": "^0.90.104",
"@plugnet/rpc-core": "^0.90.104",
"@plugnet/rpc-provider": "^0.90.104",
"@plugnet/types": "^0.90.104",
"eventemitter3": "^4.0.0"
},

Found the ans: I need metadata v8
https://github.com/polkadot-js/api/tree/master/packages/metadata/src/Metadata/v8