VirtualBox crashes after starting gdb in Visual Studio Code - json

Question

I'm a new apprentice at my company, so I'm new to Stackoverflow and coding in general, please bear with me.
I wanted to get away from the text editors (gedit and geany) I used before and started looking for an IDE. I chose to use Visual Studio Code, and started setting it up. I had to set up a compiler and a debugger. The compiler worked, but the debugger is making trouble.
I am running Debian 64 bit in a virtual machine, the host system is windows 10 64 bit. This is my launch.json file:
{
"version": "0.2.0",
"configurations": [
{
"name": "C++ Launch",
"type": "cppdbg",
"request": "launch",
"program": "/usr/bin/gdb",
"args": [],
"stopAtEntry": false,
"cwd": "${workspaceRoot}",
"environment": [],
"externalConsole": true,
"linux": {
"MIMode": "gdb"
},
"osx": {
"MIMode": "lldb"
},
"windows": {
"MIMode": "gdb"
}
},
{
"name": "C++ Attach",
"type": "cppdbg",
"request": "attach",
"program": "/usr/bin/gdb",
"processId": "${command.pickProcess}",
"linux": {
"MIMode": "gdb"
},
"osx": {
"MIMode": "lldb"
},
"windows": {
"MIMode": "gdb"
}
}
]
}
As you can see, I set the program to gdb. Now if i try to debug my code with "C++ Launch" the terminal window for the gdb debugger will open, and the VSCode window looks like it is in debug mode.
Shortly before my Virtual machine crashes
Then my Virtual Machine just crashes, without any error message. My virtual machine client says canceled. I looked into every logfile that seemed at least a little relevant. I checked the virtual machine log. I google this problem in various ways. I checked if it crashes even if I close gdb before the crash (it does). And still I haven't found a way to prevent this crash from happening.
I asked most of my co-workers and they don't know an answer either.
This is my first post/question, if I made any mistakes (format, formulation, etc.) please tell me, so the next time I want to ask something it will be better.
Thanks in advance.