Error downloading http://arduino.esp8266.com/st…/package_esp8266com_index.json
And out of sudden no ESP8266 boards available to choose in the board drop-down menu.
I am using Arduino IDE 1.8.3, at the Additional Boards Manager URLs: http://arduino.esp8266.com/st…/package_esp8266com_index.json
At the bottom of the IDE, the warning message:
http://downloads.arduino.cc/packages/package_index.json file signature verification failed. File ignored.
I have uninstall and re-install back the Arduino IDE, still same problem.
Kindly advice how to fix the above problem.
Thank you.
Best regards.
Kam