Technical Oil leak from middle of rocker cover help

[mccltd]

Ive noticed a oil leak on my daughters car and after taking the air filter of the leak can be seen coming from the rocker cover as per the picture below.
Can anyone offer any advise as to what the problem could be?

 

[John202020]

This has come up before with the plastic cover, cant remember the post though.

 

[John202020]

This post https://www.fiatforum.com/500/484957-fiat-500-1-2-2017-valve-cover-leak-not-gasket.html?p=4576552