@TeamYouTube sir, please help me sir, My YouTube channel subscribe button didn't work in last 5days,Ex:UknownError 503.
Whats the problem...solve this problem sir,ThankYou.
My channel URL:https://www.youtube.com/channel/UCNtfKOaW4-YwrV2qznLXr5A …
Just to clarify, are you using a desktop? These troubleshooting steps can help: check browser updates, clear cache and cookies (https://yt.be/help/Cko1 ), sign out & sign back in, restart your device. Keep us posted!