Need code review! Windows security detect my program is a Trojan!

When I download my program from my Github repository. I got this notification from Windows security. Why Windows security detect it as a Trojan? I really appreciate a reply from you. Thank you!

This is my repository:

I noticed when I download my program from another Windows machine. Windows Defender did not give me the above notification. Also,I use a famous antivirus scaned my program. It did not detect any threats. It shoubld be a wrong notifiation from Windows Defender.