Unable to fund grants when using Argent via WalletConnect

[nopslip]

Describe the bug
When I click Fund Items button nothing happens in the UI and errors can be seen the dev console.

To Reproduce

1. Use WalletConnect to connect to an Argent wallet on phone
2. Add grants to your cart
3. Click Fund Items

Expected behavior
When clicking Fund Items your grants should be processed and tokens removed from your wallet.

Screenshots

Desktop (please complete the following information):

• OS: MAC OSX Catalina
• Browser: Firefox 78.0.1 & Chrome 83.0.4103.116

Smartphone (please complete the following information):

• Device: iphone X
• OS: iOS 13.5.1

Additional context

Argent App version 1.1.2(853)

Seems like it could be related to this WalletConnect issue so maybe an upgrade to WalletConnect would resolve the issue.

[developerfred]

@nopslip I will open a pr with the Argent adapter