Inconsistency between cosmology and fisher parameters in config file generates a TypeError in the derivative calculation

[bruno-moraes]

If a config file has a cosmological parameter (in my example, sigma8) and this parameter is missing for the Fisher matrix (in my example, replaced by A_s), the derivative will fail with an obscure TypeError unsupported operand.

A solution is to try to catch this inconsistency before it happens.

I am assigning this issue to myself.