Why does Qt Qreator not see the files it created?

In the files panel, I don't see any files and the original standard project doesn't compile. I just go through the initial video lessons, but I don't see the files.
What might be missing in it? Next to the file FirstProj.pro QT Creator created the standard .cpp files .h but they are not visible and the assembly is also not going-writes Could not determine which "make" command to run. Check the "make" step in the build configuration. Where can I see it? enter a description of the image here Thank you

Author: Rakzin Roman, 2018-01-22

1 answers

Installing g++helped me:

sudo apt install g++ -y
 1
Author: fimmind, 2019-01-15 17:35:37