howto get list of missing map textures

I downloaded that file: above-full-ff212c33353fe3faaee77c2fb6bd0718fcfc53c7-297fee7bcbdf27de9dc44e82843def0459f8acee.pk3 and copy it to a fresh installed Xonotic.
When i play the map now, i noticed that at least one texture is missing. There are 3 teleporters in the map. Normaly you can look thru these teleporters and you can see what is behind, but on my fresh installed Xonotic there is only a black texture with a green grid. How can i find out which texture(s) and which *.pk3 file is missing?

Those are called waprzones and you need to enable reflections to see through them: Effects - > Reflections (r_water 1)
I'm guessing that is the cause, since reflection are not enabled by default.

Oh and if there are missing textures they'd listed in the console (Shift+ESC) at the start up of a map.

r_water 1

Thx, that was the solution!

Ideally you want to set them to "Sharp" (r_water_resolutionmultiplier 1) for best visibility. This can be performance heavy on maps with a lot of water.