at_hash mismatch error with custom provider

[LucasStbnr]

I am using next-auth with my custom provider configured with pkce flow and I have the following error when I'm trying to connect
at_hash mismatch, expected Nfd3scV62rMMJ3yjDwWijg, got: Nfd3scV62rMMJ3yjDwWijg==
Any idea to solve this problem ?

[bro-ge]

I've got the same issue, do you find any stuff to fix it ?

[LucasStbnr]

I can't really remember the exact solution, but I think rewriting the token call myself was part of it.
Hope this helps you.

token: {
    url: appConfig.oauth2.tokenUrl,
    async request(context: TokenRequestContextType) {
        const urlParams = {
            grant_type: 'authorization_code',
            code_verifier: context.checks.code_verifier,
            code: context.params.code,
            client_id: context.client.client_id,
            redirect_uri: context.provider.callbackUrl,
        };

        return axios
            .post(context.provider.token.url, urlParams, {
                headers: {
                    'Content-Type': 'application/x-www-form-urlencoded',
                },
            })
            .then((res) => ({ tokens: res.data }))
            .catch(() => {
                throw new Error('Fetch failed');
            });
    },
},

If it's not try setting this option but I'm not sure what it does

client: {
    token_endpoint_auth_method: 'none',
},