Compiling error

[kompilainenn]

I tried to compile it. After make command I got the error:

In function ‘rtw8822c_txgapk_read_offset’:
/home/roman/Загрузки/rtw88-usb-master/rtw8822c.c:1482:2: error: implicit declaration of function ‘fsleep’; did you mean ‘ssleep’? [-Werror=implicit-function-declaration]
1482 | fsleep(1000);
| ^~~~~~
| ssleep
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:276: /home/roman/Загрузки/rtw88-usb-master/rtw8822c.o] Ошибка 1
make[1]: *** [Makefile:1707: /home/roman/Загрузки/rtw88-usb-master] Ошибка 2
make[1]: выход из каталога «/usr/src/linux-headers-5.6.0-1028-oem»
make: *** [Makefile:112: all] Ошибка 2