User email instead of preferred_username

src/pages/api/auth/oauth/authentik.ts

@@ -66,7 +66,7 @@ async function handler({ code, state, host }: OAuthQuery, logger: Logger): Promi
   if (!userJson) return { error: 'invalid user request' };
 
   return {
-    username: userJson.preferred_username,
+    username: userJson.email,
     user_id: userJson.sub,
     access_token: json.access_token,
     refresh_token: json.refresh_token,