I just installed Qt creator on my Mac and when I try to build default project (hello world) it shows the text:

Error while building/deploying project untitled5 (kit: Desktop Qt 5.7.1 clang 64bit)
When executing step "qmake"

Please, could you help me what's wrong? I was working in Qt creator just on PC in my school but I have some "exams" next week and I need it in my computer too.