# \[Archive\] Error on eth signer in @tkey-mpc SDK package js

**URL:** <https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338>\
**Category:** Embedded Wallets (Web3Auth)\
**Created:** [April 25, 2024, 5:29pm UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338 "2024-04-25T17:29:09Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![aganjalip](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@aganjalip](https://builder.metamask.io/u/aganjalip)\
**Post date:** [April 25, 2024, 5:29pm UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338/1 "2024-04-25T17:29:09Z")

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> **🏛 Archived Content from Web3Auth Community**
> 
> This topic was originally posted by **aganjalip** on 4/25/2024.  
> This content has been migrated from our previous community forum to preserve valuable discussions.

* * *

HI @guru

Previouse thread ([Invalid signed message generated by @tkey-mpc sdk package js](https://web3auth.io/community/t/invalid-signed-message-generated-by-tkey-mpc-sdk-package-js/7700)) regarding eth signer closed automatically everything was fine till today suddenly we got this error without any changes

Precompute failed, error: Some(General(GeneralError { descstring: “read\_msg: Session desn1-verifier\u{1c}aganjalip@gmail.com\u{15}default\u{16}0\u{17}3b845ad7d552621a5de850153bae0d4875e7198966ef1c3e6ff5f1b614f8f46f: 3\<-0: desn1-verifier\u{1c}aganjalip@gmail.com\u{15}default\u{16}0\u{17}3b845ad7d552621a5de850153bae0d4875e7198966ef1c3e6ff5f1b614f8f46f~chi:208: unknown cause” }))

at this line of sign function:

```auto
      client.precompute(tss, {
        signatures,
        server_coeffs: serverCoeffs,
        nonce: scalarBNToBufferSEC1(new BN(0)).toString("base64"),
      });

```

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**Author:** ![TomTom](https://avatars.discourse-cdn.com/v4/letter/t/a9a28c/32.png) [@TomTom](https://builder.metamask.io/u/TomTom)\
**Post date:** [April 26, 2024, 12:13am UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338/2 "2024-04-26T00:13:53Z")

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hi @aganjalip ,

I hope you are doing well. I would talk to Guru and other team members so we can help you with this issue.

Thanks for the patience

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**Author:** ![guru](https://avatars.discourse-cdn.com/v4/letter/g/ecae2f/32.png) [@guru](https://builder.metamask.io/u/guru)\
**Post date:** [April 28, 2024, 5:17am UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338/3 "2024-04-28T05:17:01Z")

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> [@aganjalip](#):
>
> `scalarBNToBufferSEC1`

Hey @aganjalip  
the example works fine for me can you try again  
if issue persists let us know

also remove nonce variable and try once

if issue persisits let us know  
will assist you over a call

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<div class="post-metadata">

**Author:** ![aganjalip](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@aganjalip](https://builder.metamask.io/u/aganjalip)\
**Post date:** [April 30, 2024, 12:27pm UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338/4 "2024-04-30T12:27:03Z")

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the error apears time to time. I will remove nonce and inform you about the result.

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<div class="post-metadata">

**Author:** ![aganjalip](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@aganjalip](https://builder.metamask.io/u/aganjalip)\
**Post date:** [May 4, 2024, 4:55pm UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338/5 "2024-05-04T16:55:56Z")

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@guru i haved removed the nonce fromt the code but i still get the error time to time (not always)

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<div class="post-metadata">

**Author:** ![aganjalip](https://avatars.discourse-cdn.com/v4/letter/a/c5a1d2/32.png) [@aganjalip](https://builder.metamask.io/u/aganjalip)\
**Post date:** [May 7, 2024, 11:33am UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338/6 "2024-05-07T11:33:54Z")

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any updates on this?

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<div class="post-metadata">

**Author:** ![TomTom](https://avatars.discourse-cdn.com/v4/letter/t/a9a28c/32.png) [@TomTom](https://builder.metamask.io/u/TomTom)\
**Post date:** [May 7, 2024, 4:26pm UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338/7 "2024-05-07T16:26:13Z")

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hi @aganjalip

To solve the problem, the team suggests updating to the latest SDK.

- v2.3.3 | tss-client
- v2.3.2 | mpc-core-kit

Please contact me if you have any other questions.

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**Author:** ![vjgee](https://avatars.discourse-cdn.com/v4/letter/v/b5e925/32.png) [@vjgee](https://builder.metamask.io/u/vjgee)\
**Post date:** [June 10, 2024, 5:21am UTC](https://builder.metamask.io/t/archive-error-on-eth-signer-in-tkey-mpc-sdk-package-js/1338/8 "2024-06-10T05:21:07Z")

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@aganjalip Were you able to upgrade to the latest SDK as indicated by @TomTom