C:\Users\gumbo\Documents\Arduino\libraries\google-cloud-iot-arduino-master\src\CloudIoTCoreMqtt.cpp: In member function 'void CloudIoTCoreMqtt::mqttConnect(bool)':
C:\Users\gumbo\Documents\Arduino\libraries\google-cloud-iot-arduino-master\src\CloudIoTCoreMqtt.cpp:48:18: error: '_backoff_at_millis' was not declared in this scope
if (millis() < _backoff_at_millis)
^
C:\Users\gumbo\Documents\Arduino\libraries\google-cloud-iot-arduino-master\src\CloudIoTCoreMqtt.cpp:80:7: error: '_backoff_at_millis' was not declared in this scope
C:\Users\gumbo\Documents\Arduino\libraries\google-cloud-iot-arduino-master\src\CloudIoTCoreMqtt.cpp:91:9: error: '_backoff_at_millis' was not declared in this scope
C:\Users\gumbo\Documents\Arduino\libraries\google-cloud-iot-arduino-master\src\CloudIoTCoreMqtt.cpp: In member function 'void CloudIoTCoreMqtt::mqttConnect(bool)':
C:\Users\gumbo\Documents\Arduino\libraries\google-cloud-iot-arduino-master\src\CloudIoTCoreMqtt.cpp:48:18: error: '_backoff_at_millis' was not declared in this scope
if (millis() < _backoff_at_millis)
C:\Users\gumbo\Documents\Arduino\libraries\google-cloud-iot-arduino-master\src\CloudIoTCoreMqtt.cpp:80:7: error: '_backoff_at_millis' was not declared in this scope
C:\Users\gumbo\Documents\Arduino\libraries\google-cloud-iot-arduino-master\src\CloudIoTCoreMqtt.cpp:91:9: error: '_backoff_at_millis' was not declared in this scope
exit status 1 Error compiling for board LOLIN(WEMOS) D1 R2 & mini.