Hello,
I made a new project at SEGGER for nRF5340 and in the first step before do any development I face with the attached error! The file it asked doesn´t exist !!
Could you please guide me.

Hello,
I made a new project at SEGGER for nRF5340 and in the first step before do any development I face with the attached error! The file it asked doesn´t exist !!
Could you please guide me.

I found the solution. I followed the steps according to your first Hello-world and I added my files to Cmake according to the attached photo and and at the end, Project>Run Cmake ...
Yeah, you need to do "Project>Run Cmake" (or re-open the project) when you make changes to configuration files, overlays or CMakeLists.txt.
Great to hear that it's working now!