Plugin conflict with Ninja Forms, please help…

An error appears in the console:

Uncaught TypeError: n.split is not a function
    at S.fn.init.mask (front-end--inputmask.min.js?ver=3.6.7:5:1254)
    at HTMLDocument.<anonymous> (scripts.js?ver=1.8:18:26)
    at e (jquery.min.js:2:30038)
    at t (jquery.min.js:2:30340)

front-end–inputmask.min.js – from Ninja Forms plugin
scripts.js – from Masks Form Fields plugin

Obviously they are in conflict because of the input-mask, help them make friends…