Here:
ESC - General Settings - Crashes - Upload Crashes Automatically
I personally would advise against switching this off, as then we will be unable to know about crashes, which are happening for you and we will have less chances to fix them - but this is completely your decisions and feel free to do so, if you are too worried about your privacy or similar (but it does for example not include any information what else is running on your machine, well, except if for example the crash is directly caused by some other application like an overlay, then we can often see which application crashed it).