Better AuthBA
Better Auth•9mo ago
The Untraceable

State check failing for Discord OAUTH2

First time using Better Auth with MongoDB. Here's my sign in function:
    const signIn = async () => {
        const data = await authClient.signIn.social({
            provider: "discord",
            scopes: ["guilds"],
        })
        if (data.error) {
            toast.error("Failed to sign in")
            return
        }
        console.log(data.data)
    }

After clicking, the user is redirected to https://discord.com/oauth2/authorize?scope=identify+email+identify+guilds&response_type=code&client_id=1355667186252910733&redirect_uri=https%3A%2F%2Fdev.domain.xyz%2Fapi%2Fauth%2Fcallback%2Fdiscord&state=eVUCntIyBg3F2ebiRDryvuwbB2C9OFO0&prompt=none
In the DB it looks like this:
{
  "_id": {
    "$oid": "67e883c1b4193eb74610f598"
  },
  "identifier": "eVUCntIyBg3F2ebiRDryvuwbB2C9OFO0",
  "value": "{\"callbackURL\":\"https://dev.domain.xyz/api/auth/callback/discord\",\"codeVerifier\":\"dg6yhQrgdkJaiZLaygUIGKrSriz7tkqVrcc9wjBrf5PuqEqlvkT4ELXRQEEgnBJRhHsUfWU_D_9a0RrCCAyI3r79wdkaIvlNLoOgAQbSpMT5deGbR8a2c3wEE9BOVcNA\",\"expiresAt\":1743291929748}",
  "expiresAt": {
    "$date": "2025-03-29T23:45:29.748Z"
  },
  "createdAt": {
    "$date": "2025-03-29T23:35:29.748Z"
  },
  "updatedAt": {
    "$date": "2025-03-29T23:35:29.748Z"
  }
}

I'm not sure why it keeps saying thate state not found, whilst I can see it's in the redirect.
When clicking return to Application, you're logged in successfully.
image.png
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