c:/users/administrator/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.4-gcc10.3-1757bed/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: sketch\clear_Screen.ino.cpp.o: in function `loop':
C:\Users\Administrator\Desktop\Demo_UNO_Software_SPI\Example_01_clear_screen\clear_Screen/clear_Screen.ino:56: undefined reference to `_ZN11LCDWIKI_SPIC1Etaaaaaaa'
c:/users/administrator/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/3.0.4-gcc10.3-1757bed/bin/../lib/gcc/xtensa-lx106-elf/10.3.0/../../../../xtensa-lx106-elf/bin/ld.exe: sketch\clear_Screen.ino.cpp.o: in function `__static_initialization_and_destruction_0':
C:\Users\Administrator\Desktop\Demo_UNO_Software_SPI\Example_01_clear_screen\clear_Screen/clear_Screen.ino:59: undefined reference to `_ZN11LCDWIKI_SPIC1Etaaaaaaa'