Fails to build using 4.19 kernel [closed]

Iam relative new to Linux Debian Buster.

Now I try to install the driver for my RTL8723DE WiFi chip.

I use this source:

https://github.com/rtlwifi-linux/rtw88_8723de

When I am at the point where I do 'make' I get the following error:

/usr/src/linux-headers-4.19.0-12-common/include/linux/kernel.h:72:25: error: expected       declaration specifiers or ‘...’ before ‘(’ token #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))

I saw that other people had a similar problem but their solution didnt worked for me:https://github.com/smlinux/rtl8723de/issues/27

From the error description I think this is an syntax problem. I tried a bit around but cantfind a solution.

Thank you for your help