I play on 1.12.2 singleplayer. I can place the portal and everything fine but when i right click it nothing happens.
-I also have many other mods active, but if one of them is causing the issue, idk which one.

Log?

I'm having the same issue on 1.14.4.
Log: https://paste.feed-the-beast.com/view/9175137b

@FemStranger please make a new issue..

https://paste.feed-the-beast.com/view/151af42a

Please use https://paste.feed-the-beast.com that there is unreadable and post the full log

look like kotlin or betterportals causing the issue