# \[Archive\] How do I troubleshoot / debug JWT Custom Verifier errors?

**URL:** https://builder.metamask.io/t/archive-how-do-i-troubleshoot-debug-jwt-custom-verifier-errors/1915
**Category:** Embedded Wallets (Web3Auth)
**Created:** [June 27, 2023, 5:49am UTC](https://builder.metamask.io/t/archive-how-do-i-troubleshoot-debug-jwt-custom-verifier-errors/1915 "2023-06-27T05:49:35Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![jibrail](https://avatars.discourse-cdn.com/v4/letter/j/65b543/32.png) [@jibrail](https://builder.metamask.io/u/jibrail)
#### Post date: [June 27, 2023, 5:49am UTC](https://builder.metamask.io/t/archive-how-do-i-troubleshoot-debug-jwt-custom-verifier-errors/1915/1 "2023-06-27T05:49:35Z")

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> **🏛 Archived Content from Web3Auth Community**
> 
> This topic was originally posted by **jibrail** on 6/27/2023.  
> This content has been migrated from our previous community forum to preserve valuable discussions.

* * *

Hi,

I am trying out the no modal custom JWT verifier and i am faced with this error. How do I troubleshoot or debug this error?

[![image](https://canada1.discourse-cdn.com/flex011/uploads/metamaskbuilderhub/original/2X/0/043594a97d3e712e8a9a59b13cfa211c32fbd6d8.png)
image1203×759 16.8 KB
](https://community.web3auth.io/community/community/uploads/default/original/2X/0/0aafc4d1406f2e04cb9bd21d4f3dd8c93a967691.png "image")

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<div class="post-metadata">

### Author: ![vjgee](https://avatars.discourse-cdn.com/v4/letter/v/b5e925/32.png) [@vjgee](https://builder.metamask.io/u/vjgee)
#### Post date: [June 27, 2023, 6:08am UTC](https://builder.metamask.io/t/archive-how-do-i-troubleshoot-debug-jwt-custom-verifier-errors/1915/2 "2023-06-27T06:08:20Z")

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@jibrail You can read through our documentation for JWT errors:

 ![](https://canada1.discourse-cdn.com/flex011/uploads/metamaskbuilderhub/original/1X/4bea15d5fdfd372b2e7fae21263c61fab3da9379.png)

```
  <a href="https://web3auth.io/docs/troubleshooting/jwt-errors" target="_blank" rel="noopener">web3auth.io</a>

```

 ![](https://canada1.discourse-cdn.com/flex011/uploads/metamaskbuilderhub/original/2X/2/2449b174d480a26673054f7a11d9bb34c6f999c1.png)

### [JWT Errors | Documentation | Web3Auth](https://web3auth.io/docs/troubleshooting/jwt-errors)

JWT Errors | Documentation - Web3Auth

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<div class="post-metadata">

### Author: ![jibrail](https://avatars.discourse-cdn.com/v4/letter/j/65b543/32.png) [@jibrail](https://builder.metamask.io/u/jibrail)
#### Post date: [June 27, 2023, 6:26am UTC](https://builder.metamask.io/t/archive-how-do-i-troubleshoot-debug-jwt-custom-verifier-errors/1915/3 "2023-06-27T06:26:50Z")

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@vjgee

Aside from “invalid params”, I am not getting any other error information.

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<div class="post-metadata">

### Author: ![vjgee](https://avatars.discourse-cdn.com/v4/letter/v/b5e925/32.png) [@vjgee](https://builder.metamask.io/u/vjgee)
#### Post date: [June 27, 2023, 6:57am UTC](https://builder.metamask.io/t/archive-how-do-i-troubleshoot-debug-jwt-custom-verifier-errors/1915/4 "2023-06-27T06:57:49Z")

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Please share :

- SDK version
- Platform
- Console logs screenshots
- Web3Auth Initialization and Login Code

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<div class="post-metadata">

### Author: ![jibrail](https://avatars.discourse-cdn.com/v4/letter/j/65b543/32.png) [@jibrail](https://builder.metamask.io/u/jibrail)
#### Post date: [June 27, 2023, 7:34am UTC](https://builder.metamask.io/t/archive-how-do-i-troubleshoot-debug-jwt-custom-verifier-errors/1915/5 "2023-06-27T07:34:44Z")

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Thanks @vjgee

I was able to resolve the issue by inspecting the console in the inspector window.