Unable to add customers when permission scheme missing some permissions for certain roles

Issue Summary

Unable to add customers when permission scheme missing some permissions for certain roles
 

Steps to Reproduce

1. Setup a permission scheme which is missing some permissions for certain roles.(screenshot attached)
2. Try adding customers, you will get an error.
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Expected Results

We should be able to add customers

Actual Results

We get an error while adding customers

Workaround

1. Fix the permission scheme and you will be able to add the customer.
2. Or add the customer first in a different project and then you will be able to add customers in this project as well.