Reset the current systems

Even I logged out and login again, the system is not reset and keep running.
I tried ctrl+Z, not working as well.

I have some trouble with this, therefore want to reset this system.
How I could do?

Have you tried the reset buttons in the upper right corner of the simulation?

I tried. Unfortunately, the simulation is reset but the IDE part is still not. I could not control the input panel.

This gives me errors like this. :cry:

I gather by “reset”, you want to reset your VM. In order to do this, you need to exit the course and leave the system for about 20 mins. When you are back, you will get a new VM.