No such file or directory

Arduino:1.8.8 (Windows Store 1.8.19.0) (Windows 10), Development board:“Arduino/Genuino Uno”

sketch_dec16b:1:26: error: LCD12864RSPI.h: No such file or directory

compilation terminated.

exit status 1
LCD12864RSPI.h: No such file or directory

This report would have more information with
“Show verbose output during compilation”
option enabled in File → Preferences.

Did you install the library?

It seems it's a part of DF Robot's Mind Plus library