UI page with multiple buttons cause error

[AbdallahFH]

Release Type: Official Release

Version: 4.2.0.2188

Platform(s): Windows

Describe the bug
When I create a UI page with multiple buttons the game won't run
Edit:
it seems that not the UI pages is the problem but the entities that I am creating
To Reproduce
Steps to reproduce the behavior:

1. Create a UI page with multiple buttons and name it like b1,b2,b3...
   Screenshots
   when I try to open the project again it shows me this error:
   
   same log in Bug.txt
   Log and callstacks
   Bug.txt
   Uploading bug2.txt…

Additional context
https://youtu.be/vJyYcTt7KlU

[Kryptos-FR]

What is the type of the property you set the UI Page to in the camera entity script? And why do you need such a reference?

The issue seems to be there.