ReownSignError in approveSession

[a-kirzner]

SDK Affected

WalletKit

Describe the bug

Hello! Sometimes I get this error ReownSignError(code: 5102, message: Unsupported events. approve() namespaces events don't satisfy requiredNamespaces events for eip155. Requested: [chainChanged, accountsChanged, message, disconnect, connect], Supported: [accountsChanged, chainChanged], data: null) when I'm trying to approve session.

Reproducible code

the part of my code:

 final sessionProposals = web3wallet.getPendingSessionProposals();
    final sessionProposal = sessionProposals[pairingId.toString()];

    if (sessionProposal == null) return status;

    final namespaces = {
      ...sessionProposal.requiredNamespaces,
      ...sessionProposal.optionalNamespaces,
    };

    final namespaceAccountsMap = <String, List<String>>{};

    for (final account in accounts) {
      final protocol = account.protocol.name;
      final namespace = namespaces[protocol];

      if (namespace == null) continue;

      final chainId = account.chainId;
      final address = account.coinInfo.coin.address;
      final walletAccount = '$protocol:$chainId:$address';

      namespaceAccountsMap[protocol] ??= [];
      namespaceAccountsMap[protocol]!.add(walletAccount);
    }

    final walletNamespaces = <String, Namespace>{};

    for (final namespaceAccountEntry in namespaceAccountsMap.entries) {
      final protocol = namespaceAccountEntry.key;
      final namespace = namespaces[protocol];

      if (namespace == null) continue;

      walletNamespaces[protocol] = Namespace(
        accounts: namespaceAccountEntry.value,
        methods: namespace.methods,
        events: namespace.events,
      );
    }

    ApproveResponse approveResponse;

    approveResponse = await web3wallet.approveSession(
        id: pairingId,
        namespaces: walletNamespaces,
    );

• Flutter 3.29.1
• Dart 3.7.0

Could you please tell me what can be wrong?

[linear]

APKTN-494 ReownSignError in approveSession

[quetool]

Hello! A couple of things are happening here. The Dapp is configuring requiredNamespaces, which we are discouraging to do and favor instead, optionalNamespaces.

On the other hand, your wallet is not support those extra evens () because you didnt' register an emitter to them (registerEventEmitter())

I strongly suggest you to use generatedNamespaces on your side. Check this section: https://docs.reown.com/walletkit/flutter/usage#namespace-builder