Hi I tried to import the template but is not importing it fail when I try to import the home

hi, I have a problem with creating a menu. hi, I have a problem with creating a menu. When I edit the “navigation menu” section in the header, it tells me an error “Your theme does not support navigation menus or widgets”. In the video instructions, there is a procedure for creating a menu, but that doesn’t work either. Please, help me

Great Work,Congratulations GLWS