Hello Yasmine
Great to hear that you are using POI 4 XPages and also joining the XPages Developer Crowd.
Can you please provide us some information about the Error. For that you should change the follwoing setting on your application:
Enabling the Display XPage runtime error page will provide you more information on how and what fails.
And here some short question for verification:
- What server version did you use
- Did you signed the content of the updatesite on your server with a Notes ID that has the right to run this type of code?
- Can you type on the server console the command “tell http osgi ss biz.webgate” and post the result?
Hope that helps
Best regards
Christian