按照这个文章下载源代码，但是编译出错，有知道是什么原因的吗：https://www.bigiot.net/help/4.html ,实时数据监控——基于Arduino + ESP8266实时监控环境温度
In file included from F:\缂栫▼\Arduino\璐濆３鐗╄仈\Temprature\wendu\wendu.ino:4:0:
C:\Users\Lenovo\Documents\Arduino\libraries\aJson/aJSON.h:92:6: error: conflicting return type specified for 'virtual int aJsonStream::flush()'
int flush();
^
In file included from C:\Users\Lenovo\AppData\Local\Arduino15\packages\arduino\hardware\avr\avr\cores\arduino/Stream.h:26:0,
from C:\Users\Lenovo\AppData\Local\Arduino15\packages\arduino\hardware\avr\avr\cores\arduino/HardwareSerial.h:29,
from C:\Users\Lenovo\AppData\Local\Arduino15\packages\arduino\hardware\avr\avr\cores\arduino/Arduino.h:232,
from sketch\wendu.ino.cpp:1:
C:\Users\Lenovo\AppData\Local\Arduino15\packages\arduino\hardware\avr\avr\cores\arduino/Print.h:90:18: error: overriding 'virtual void Print::flush()'
virtual void flush() { /* Empty implementation for backward compatibility */ }
^
exit status 1
为开发板 Arduino/Genuino Uno 编译时出错。