DeprecationWarning: Conversion of an array with ndim > 0 to a scalar

[mlincett]

The injector module (L136) raises this deprecation warning:

DeprecationWarning: Conversion of an array with ndim > 0 to a scalar is deprecated, and will error in future. Ensure you extract a single element from your array before performing this operation. (Deprecated NumPy 1.25.)

To be followed up.