I did put the base64 library in my library pad.. MQTT is not used Q:\_Files\Arduino\ArduinoEasy-master R154\ArduinoEasy\_C005.ino:103:11: error: 'MQTTclient' was not declared in this scope MQTTclient.publish(tmppubname.c_str(), value.c_str(), Settings.MQTTRetainFlag); ^ Error compiling for board Ar...