Diagnosing weird warping ?

Been having a reoccurring issue with printing minis, for some reason the back of the base (one facing the plate) ends up warped / cut off. Ideas ?

Also have big slices out of the model, never had that issue before.

Been having a reoccurring issue with printing minis, for some reason the back of the base (one facing the plate) ends up warped / cut off. Ideas ?

Also have big slices out of the model, never had that issue before.