Hi, I also ran into this error after updating the module. When I switched to a different version, it started working properly. You can try checking with another version too—it might solve the issue.

1. The error 401 Forbidden with “Please clear cache and cookies” means the request is not authenticated.

2. On the production server it works because session cookies are valid locally.

3. From another machine, no valid session → request blocked.

4. Fix: clear browser cache/cookies and log in again.

5. Check reverse proxy / load balancer cookie handling if used.

6. Ensure report request runs under a valid Mendix session.

 References:

• Authentication & Security

•  Troubleshooting Runtime Problems

We have fixed the issue, it is in our WAF policy that blocks the download of the document.