I followed the steps to compile Aseprite from this source:
https://github.com/aseprite/aseprite/blob/master/INSTALL.md
Once I got to the last step, the error message appears when I run the command: ninja aseprite
A quick note, I installed Ninja through homebrew (command -> brew install ninja). I really need to get Aseprite ASAP for a game developing project. Thanks for all the help. Screenshot is provided to show the error.
How to solve this?