Rudder

When adding a new method in a Technique in ncf editor, without

Form is initialized with 'undefined' value which are considered valid on the UI part (which should not) so save button is activated (and should not)

Clicking on that button we got an error on the API which fails when calling a regexp search on a None value which is impossible ... that'a a python error, and very confusing, we should a message every one can understand (by checing if the value is None before checking it)