GPK error

When in game of a parkour server it gives me this error:

ERROR: GAMEMODE:‘UpdateAnimation’ Failed: gamemodes\base\gamemode\animations.lua:117: attempt to index local ‘velocity’ (a nil value)

This was not happening yesterday and when the person updated the server this came up for me.
It gives me a bad running animation, a bit jumpy, and i see things alot slower, such as jumping from wall to wall.
Thanks in advance.