Hi Mona Khanafriboor,
Please, the project was developed in older version KDS. For this case is needed to do this change with the linker:

Please fill -specs=nano.specs -specs=nosys.specs and uncheck the option "Use newlib-nano (--specs=nano.specs)"
I tested on my side and now it works without problems.
Please, let me know, if it helps you.
Best Regards,
Iva