Trados 2019 is blocked and can't closed

I use Windows 10 and Studio 2019.

I was opening a project then Trados Studio is blocked. And I received the message : Echec de chargement de project depuis "C\:Users\******" (Failed to load project from "C\:Users\******").

Now I can't open anything and I can't close the Studio.

When I trying to close it I receive the message : Failed to deactivate view Editor.

And When I click some icons I receive : Une  exception de type 'System.OutOfMemoryException' a été levée.

So I can't do nothing.

I thought of performing SDL Frechstart but as I can't close Studio, I can't do it...

Someone could help me ?

Emi