Unstoppable error flood freezes editor after trying to generate a Concave Collision Shape

[yaelatletl]

(Done)

Godot version:
3.1 Stable

OS/device including version:
Windows 10 Intel HD graphics 520

Issue description:
When you try to create a concave collision shape from this menu

You will get this error:
ERROR: build: Condition ' O == __null ' is true. Continuing..:
At: core/math/quick_hull.cpp:402
ERROR: build: Condition ' !F2 ' is true. Continuing..:
At: core/math/quick_hull.cpp:428
Sometimes it will stop and will generate a concave mesh but some times it won't stop at all and you will be forced to exit godot.
Steps to reproduce:
(I think this happens in objects that are made out of separated meshes)
*Create an object in some editor, import it into godot
*Select its meshinstance
*From the mesh menu select create concave staticbody
*It freezes.

Minimal reproduction project:
Try to generate concave staticbodies for these:
objects.zip

[Chaosus]

Looks like an old problem has been revived - #21141

[ScepticDope]

I have the same problem when I try this on a CapsuleMesh. Using 3.1.1 Stable Mono.

[rcorre]

Also happens with Convex collision shapes, on master (76678b2).
example.zip

My object is just a single mesh, so I don't think multiple meshes are the issue.

[rcorre]

Interestingly, mine fails on convex but is fine for trimesh.

[KoBeWi]

Still valid in 3.2.4 beta3

[kleonc]

Also happens with Convex collision shapes, on master (76678b2).
example.zip

Present in 3.3.2.stable.
Fixed in 3.4.beta3 (most likely by #48533).
Didn't check master (but most likely fixed by #48916).

[Calinou]

Closing per @kleonc's comment.