Question mark on project saying: [Firmwares NO-HEAD]?

Hi, I am using Atollic trueSTUDIO for STM32 version 9.3, and STM CubeMX version 5.2.0. I usually don't have any problem while using these two, but however, on my last project, I have this Question Mark icon on my project name, and a text saying: "[Firmwares NO-HEAD]" as shown on the picture.

I can still run my firmware with no problem, but I am just wondering what should I do with this issue?

Have anyone encountered this problem?

Thanks!!

Stanley