Cookie length exceeding browser max

[sonic epoch]

export const emailStrategy = new EmailLinkStrategy({ sendEmail, secret, linkExpirationTime: 1200000, callbackURL: '/magic', validateSessionMagicLink: true, },
    async ({
      email,
    }) => {
        console.log(email)
        let updatedUser = await findOrCreateUser('APPLE', email)
        
        return updatedUser?.id;
    }
  )

this is my strategy code, i'm not too familiar with it so i'm stuck right now

any possible causes to this? anything to point me in the right direction would help, not looking for code solution, just trying to find out what's exactly going on