LSP failed on hover

[kant2002]

Consider this module

module FStar.Preorder

type relation (a : Type) = a -> a -> Type0

let reflexive (#a:Type) (rel:relation a) =
  forall (x:a). rel x x

Hover over relation inside reflective declaration. LSP crash consistently

/home/kant/d/github/fstar/FStar/ulib/FStar.Preorder.fst(22,29-22,37): (Warning 264) Normalization failed with error FStar_Errors.Error(_)

(Warning 282) Expected Z3 version "Z3 version 4.8.5", got "Z3 version 4.8.15 - 64 bit
"
Please download the version of Z3 corresponding to your platform from:
https://github.com/FStarLang/binaries/tree/master/z3-tested
and add the bin/ subdirectory into your PATH

(Error 334) Internal error: incompatible version for universe unification variable ?3: current version is 8.0; got version 2.1