Signing a message from a DApp crashes the app

[iamacook]

Bug description

When triggering a message signing from within a DApp (e.g. Snapshot), the app crashes, throwing the following error:

Environment

• DApp: Monerium, Snapshot (probably any dapp that requests a signature)
• Chain: Ethereum/Gnosis Chain

Steps to reproduce

1. Open Snapshot.org
2. Connect a Safe via WalletConnect
3. Edit Profile on Snapshot
4. Safe crashes

Expected result

The signing modal opens and you are able to sign a message.

Obtained result

The app crashes.

[katspaugh]

I can't reproduce it on snapshot.org anymore. Maybe there were issues on the WC bridge?
In any case, the app shouldn't crash. We should catch and handle that error properly.

[iamacook]

I can't reproduce it on snapshot.org anymore. Maybe there were issues on the WC bridge? In any case, the app shouldn't crash. We should catch and handle that error properly.

Neither can I.

I'd suggest we tackle this immediately after #1746 is merged as that touches everything EthersAdapter related.