just upgraded discourse from 2.0.0.beta4 to 2.0.0.beta5 and now the page does not load.
browser console gives some error about my slick gallery component which i have set as default theme.
now i tried to access /admin/ but here i get the same result.
i have alread read How to change default Discourse theme?
but as said, i cant access discourse administration.
how could i change the default theme on cli?
thanks