Wallet error code from the TON Connect spec.
OptionaldataWallet-provided data, when present.
Wallet error message; empty when the wallet sent none.
OptionalnormalizedSet when the wallet rejected the request instead of answering with an error response, and the SDK rebuilt the response from the rejection.
Optionalresponseid of the wallet response, when present.
The error a wallet returned, as it arrived. Present only on errors built from a wallet response.