The reason in your case is that when the cam is not found, the first video input device found is selected, in this case it’s the “Logitech Capture”. This driver causes the crash, it is quite unpredictable as all of the procedure of inserting it in the video-chain runs w/o problems or errors and after the program continues to run peacefully, the driver suddenly crashes. This also happens when you start VST Connect successfully and select that device.
Anyway, we will abandon the “Logitech Capture” device in upcoming versions so that you cannot even select it. There are 30 other cam products which run with no problems whatsoever. Nothing is lost, as the cam can be chosen directly. For now, either uninstall the Logitech Capture app - if you don’t really use it, that’s a good idea anyway - , or make sure the cam is connected when you start VST Connect.