"Child "companyFields" does not exist."

Your software
My Mautic version is: 3
My PHP version is:7.3.20

Your problem
My problem is:
When trying to add vTiger plugin I get the following error in the log.

These errors are showing in the log:
[2020-07-24 16:40:14] mautic.CRITICAL: Uncaught PHP Exception Symfony\Component\Form\Exception\OutOfBoundsException: “Child “companyFields” does not exist.” at /home//domain/vendor/symfony/form/Form.php line 913 {“exception”:"[object] (Symfony\Component\Form\Exception\OutOfBoundsException(code: 0): Child “companyFields” does not exist. at /home//domain/vendor/symfony/form/Form.php:913)"}

Steps I have tried to fix the problem:

Tried Googling part of the error. I am new to Mautic so I am not sure where to start.

I would appreciate any help.