lv_conf.h , line 278, lv_font_roboto_16 undeclared

[PaulskPt]

While trying to build a project example for esp32-s3-box (Espressif esp-box repo),
the compiler reports the following error (see screenshot #1 below):

Note that in your repo, file lv_conf.h, the definition is in line 278.

when I change lv_font_roboto_16 into uppercase: LV_FONT_ROBOTO_16, because in line 271 is the definition:
#define LV_FONT_ROBOTO_16 1, the compiler reports another type of error, see screenshot #2 below:

[PaulskPt]

if I add the line:
#define lv_font_roboto_16 1
and then:
#define LV_DONT_DEFAULT &lv_font_roboto_16
the compiler reports with error: lvalue required as unary '&' operand,
See also:
https://stackoverflow.com/questions/16727370/lvalue-required-as-unary-operand