Please help.
i dont know what happen. before it was fine. now cant compiling any board even blink mode.
Arduino: 1.8.3 (Windows 7), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, OTA, 115200, 4M (3M SPIFFS)"
C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\hp\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\hp\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\hp\Documents\Arduino\libraries -fqbn=esp8266:esp8266:nodemcuv2:CpuFrequency=80,UploadTool=espota,UploadSpeed=115200,FlashSize=4M3M -ide-version=10803 -build-path C:\Users\hp\AppData\Local\Temp\arduino_build_931449 -warnings=none -build-cache C:\Users\hp\AppData\Local\Temp\arduino_cache_208656 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.mkspiffs.path=C:\Users\hp\AppData\Local\Arduino15\packages\esp8266\tools\mkspiffs\0.1.2 -prefs=runtime.tools.esptool.path=C:\Users\hp\AppData\Local\Arduino15\packages\esp8266\tools\esptool\0.4.8 -prefs=runtime.tools.xtensa-lx106-elf-gcc.path=C:\Users\hp\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2 -verbose C:\Program Files (x86)\Arduino\examples\01.Basics\Blink\Blink.ino
Board nodemcuv2 (platform esp8266, package esp8266) is unknown
Error compiling for board NodeMCU 1.0 (ESP-12E Module).