Error: "Makefile" line 106: warning: using previous script for "./obj/%.o" defined here

[rajhlinux]

I get the following error:

$ make

make: "/usr/home/user/yolo2_light/Makefile" line 12: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 14: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 53: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 55: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 57: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 59: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 61: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 63: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 67: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 72: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 74: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 77: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 79: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 83: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 85: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 89: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 92: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 95: Invalid line type
make: "/usr/home/user/yolo2_light/Makefile" line 109: warning: duplicate script for target "./obj/%.o" ignored
make: "Makefile" line 106: warning: using previous script for "./obj/%.o" defined here
make: Fatal errors encountered -- cannot continue
make: stopped in /usr/home/user/yolo2_light

on freebsd 13.1

Thanks.