graphicstest compile error under Arduino, cannot find FS.h

[puterwang]

Hi, All
I just got a Wrover board and I want to test the on board LCD panel, I download the latest WROVER_KIT_LCD package from github. Everthing is OK under MacOS, I can see the demo on LCD panel. But if I move to Windows platform, the Arduino IDE often reports following compile error message, who knows the answer？ Thanks!

"In file included from C:\Users\test\AppData\Local\Temp\arduino_modified_sketch_556537\graphicstest.ino:19:0:

C:\Users\test\Documents\Arduino\libraries\WROVER_KIT_LCD-master\src/WROVER_KIT_LCD.h:13:16: fatal error: FS.h: No such file or directory

compilation terminated.

exit status 1
为开发板 ESP32 Dev Module 编译时出错。"