Falador staircase to the dwarven mine teleports to void

Going into the dwarven mine in falador teleports you into the void I believe the associated error with it is in the following line

https://github.com/2006rebotted/2006rebotted/blob/59b9dbf4604173190d8dbe7fbc6afd9991ac4813/2006Redone%20Server/src/main/java/com/rebotted/game/objects/impl/Climbing.java#L231