u/GloomyImage6190

I edit on the non classic version of lightroom on desktop, and recently, when I adjust the exposre slider, it suddenly makes the entire photo black, but when i release the slider, it shows me the photo with the correct adjustment dictated by the slider. I don't remember this happening before, so how do i make it normal again? (i run a macbook pro m5, so I don't think its because my computer's not fast enough)

I have a disc wheel pump adapter for presta valves, by elitewheels, But i can't find a way to use it. unlike the silca ones, I cannot connect a pump to it without removing the head (i've tried to push it into the presta side but it leaks air), and even then it leaks very badly. What can I do to use it? because I don't want to drop 50 bucks on any other one that has a schrader type 'tail'