[solved] Add icon to the top bar

Hello, how to add an icon to the top bar of the browser? i have an app.jl, with an interface from ui.jl.html. For some reason if i put link to the icons in head tag in .jl.html - it doesnt work. Is there a way it supposed to work directly from app.jl? or anybody have a working example for .jl.html

i used this snippet in jl.html Favicon Generator - Text to Favicon - favicon.io, putting favicon_io folder into the public folder and changing paths. And various other different examples from the internet, like this How to add icon logo in title bar using HTML ? - GeeksforGeeks
Nothing seems to work for some reason

so basically i have <link rel="icon" href="/favicon-16x16.png"> and this png is in public folder

i double checked - and this string does work correctly in casual .html file, so whats the difference if it is being used in .jl.html

PS: after waiting for like 10 minutes, idk why but icon finally appeared even though i didn’t change anything, and i restarted local host many times before that

PS2: for some reason icon does show in firefox, but doesnt in chrome