Why did the Bathroom sink stop running when all others still work?
It may start to run again if you let it rest for several hours with the tap, spigot or faucet left slightly open so that air can get into the supply pipe whilst you keep using the other sinks. If it still doesn’t work after 24 hours then, as you asked this question here, the best advice anyone should give you is to call a professional plumber for advice.
