Problem with a 3D object

Hello,

I just ask you to have your opinion on a problem I have since yesterday on unity 3D.

This problem concerns a blender 3d object modeled on and contains animations.

wanting a little tweaking the having made small changes here and there in blender, as soon as I matter in unity 3D, I have this error message appears when I select it in the Project tab :

"transform.position assign Attempt for ‘PreRenderCamera’ is not valid. Input position is {NaN, NaN, NaN}UnityEditor.DockArea: Ongui () "

In addition, I found that it was no longer visible when I click on preview.

But the most strange is that I can see from the stage and when I run my game it is visible and there is no abnormality, except that the message "isFinite (outDistanceForSort) UnityEditor.DockArea: Ongui () "is displayed continuously.

Before making these small changes I had never had this concern and I’m looking but I do not see what caused this problem.Does anyone have an idea?

Thank you in advance.

Best regards

Is the “PreRenderCamera” a camera object from your Blender file ?
I’m not sure but I think there is an object that is far from the scene’s origin (x:0,y:0,z:0) and makes Unity implementing it as a GUI element.

Maybe some screenshots of your blender file and/or of your Unity’s Console tab could lead us to understand what’s going on here?