Describe the bug
Initialization of the variable scrollableContainerRef is missing!
To Reproduce
Steps to reproduce the behavior:
- just clone and run the application
- You will see the error

Expected behavior
The application should start normally
Screenshots or GIFs

Info (please complete the following information):
- Browser : Chrome
- Version : 24
Additional context
Add any other context about the problem here.
Expected behavior
A clear ion of the variable has a typezcable, add screenshots to help explain your problem.
Info (please complete the following information):
- Browser [e.g. chrome, safari]
- Version [e.g. 22]
Additional context
Looks like someone had typo