Suddenly no resistance to clutch pedal

[F41XTH]

Hey all

Used the search function and googled what I can but could use some advice. I drove the van 2 days ago and no issues. But today I've started it and there's no longer any resistance on the clutch pedal. The spring is still attached but it's extremely easy to push down. There's a wet patch below the gearbox where I parked. Still new to owning an old van and finding the learning curve is quite steep so any advice greatly appreciated before I call the garage to recover and fix for me

[cobblers]

Clutch slave cylinder failed or the clutch pipe rotten through. Neither are the end of the world, parts are cheap.

[F41XTH]

The reservoir is very low and I haven't checked the slave yet but I'm assuming it's the culprit for the loss, too chilly to be outside right now! I quickly found the information I was looking for right after I posted, just needed to sit with a cuppa

[davidoft1]

Could Be slave or Master , look for fluid in the footwell,