[Bug]: Got "missing r" error when using EAS + Metamask + etherjs #97

[xiaohou77]

Describe the bug

Issue detail
In our dApp https://app.fairsharing.xyz/, when we make an onchain attestaion call, metamask returned the error as below snapshot below.

We use EAS + Metamask + etherjs. When we change wallet app to like OKX/Rabby wallet, it works well.

I found a relative issue ethers-io/ethers.js#3926, seems we have to wait for metamask to fix it?

Please help look into this issue, it is blocking many users using our dApp now.

Many people met the same issue too:
ethereum-attestation-service/eas-sdk#97

Expected behavior

No error reported by MetaMask extention since onchain call is successful.

Screenshots/Recordings

Steps to reproduce

1. Go to: https://app.fairsharing.xyz/
2. Create a project, then add 1 or 2 members by wallet addresses
3. Adding members will fail

Error messages or log output

No response

Version

11.15.6

Build type

None

Browser

Chrome

Operating system

MacOS

Hardware wallet

No response

Additional context

Before it works well, abour 1 month ago the issue started occuring.

Severity

P0
Many developers have reported this issue as well, see ethereum-attestation-service/eas-sdk#97

No response

[itev4n7]

possible solution described here ethereum-attestation-service/eas-sdk#97 (comment)

[peterjurco]

I experienced "Missing r" error as well but it was fixed in MetaMask 11.16.0

[dbrans]

I've marked this issue as fixed. If you run into this bug again on v11.16.0 or later, please let us know!