Page editor has a black background

Hi. So I am relatively very new to webdev and was making my 1st appropriate website using WordPress. everyhting was running fine as I was making my pages as I please, but suddenly at some point the Page block editor’s backgrpound became black. Like now things as hard to read and do in the page editor. The site editor is fine tho and the same page can be edited well in the site editor, there’s no problem there. I tried disabling all the plugins but it didn’t change. Here:s a photo:

But here is the same page in the site editor:

Please can anyone tell me what to do? Should I just reinstall the WordPress? How do I do it without losing my progress?