Error when running

I get this message when i run all codes how can i remove it

Hi @Abdullah_Saeed

This is not an error.
“root@educative:/usercode#” is the working directory where the code for the calculator resides.
You are missing the instructions given above in the lesson. Under the heading "Steps to run the program", it is written, “After clicking the “Run” button, Type calculator in the terminal window to open up the AI calculator.”
So it is the terminal where you see“root@educative:/usercode#”; you must type Calculator here to enter into the application.