If this is all that's stopping you from using this framework: by all means, just ignore it. As long as there is no fnct_inv argument to the functional field definition (there isn't), nothing happens. That won't change the scope of this bug though.
If this is all that's stopping you from using this framework: by all means, just ignore it. As long as there is no fnct_inv argument to the functional field definition (there isn't), nothing happens. That won't change the scope of this bug though.