I am working on adding comments to a codeArea from richtextfx using reactfx to detect some stuff, but while declaring it in my module info and build.gradle i only get errors

I tried to add requires:reactfx; to my module-info, anything else will give me an error on the spot, but using that will give me an error while compiling (module not found:reactfx). I added the dependency with implementation: 'org.reactfx:reactfx:2.0-M5' to my build.gradle and it still gave me the error. Finally i tried the manual install but again it gave me the exact same error. This might be a dumb question but I seriously cant see what I did wrong.