NextJS auth helpers - invalid flow state

    await supabase.auth
      .signUp({
        email,
        password,
        options: {
          emailRedirectTo: `${location.origin}/api/auth/callback`,
          data: {
            handle,
          },
        },
      })

export async function GET(request: NextRequest) {
  const requestUrl = new URL(request.url)
  const code = requestUrl.searchParams.get('code')

  if (code) {
    const cookieStore = cookies()
    const supabase = createRouteHandlerClient({
      cookies: () => cookieStore,
    })
    await supabase.auth.exchangeCodeForSession(code)
  }

  // URL to redirect to after sign in process completes
  return NextResponse.redirect(requestUrl.origin)
}