Mk7 Golf Sticky Handbrake

[Spydaman]

My Son who lives in Sweden has a mk7 Golf estate which sounds like it’s got a stuck handbrake. It’s an electric one so I assume it’s either jammed or the actuator had packed or what? anyone had experience of this? Is it a known fault?

[Spydaman]

Just one wheel which makes me think it’s a sticky calliper or actuator.