Error after update to ionic 3.6

[Sujan12]

Whoah!? It’s great that it works now, but… strange.

[ezikoh]

Ok, now to continue developing my project.
Thank you.

[Dzung]

Thanks you this work for me

[sophiefx]

had same issue with cli upgrade

fix with go into node_modules delete cross-spawn and re-install

the ionic serve work