Need someone to help fix this bug in my project

Collaboration
1

Project Name:idk yet
i need someone to debug my project and someone to code it and someone to make assets
i am currently doing every thing
my previous project is a car simulator
Team Size:as many people as possible
Responsibilities:n/a
**Project Description:idk yet
and here is project link pls help with development https://playcanvas.com/editor/scene/1114268

2

Screenshot 2021-03-25 at 5.24.24 PM
Screenshot 2021-03-25 at 5.24.24 PM1365×635 61 KB
i need this fixed which means i need a need to make the cave into a compound shape which is a lot

3

someone please help with making one of the things into a compound