How to add mods on MineTest

Hello, i want to know how can i add mods, because the paste button is disabled on minetest’s game folder. Any solution? (I get minetest from Apps Center)

PS: Sorry but i know this is off-topic.

@DavidTheSimpleGuy I have already reported your problem on Flathub

https://github.com/flathub/net.minetest.Minetest/issues/6#issuecomment-428233754