Arduino: 1.8.10 (Windows 10), Board: "EnviroDIY Mayfly 1284p" sketch_jan07a:215:5: error: expected initializer before 'for' for (uint8_t i = 0; i < numFlash; i++) { ^~~ sketch_jan07a:215:25: error: 'i' does not name a type for (uint8_t i = 0; i < numFlash; i++) { ^ sketch_jan07a:215:39: error: 'i' does not name a type for (uint8_t i = 0; i < numFlash; i++) { ^ sketch_jan07a:223:17: error: expected constructor, destructor, or type conversion before '(' token digitalWrite(redLED, LOW); ^ sketch_jan07a:224:1: error: expected declaration before '}' token } ^ Multiple libraries were found for "Adafruit_BME280.h" Used: C:\Users\Josh Multiple libraries were found for "KellerModbus.h" Used: C:\Users\Josh Multiple libraries were found for "Adafruit_INA219.h" Used: C:\Users\Josh Multiple libraries were found for "DHT.h" Used: C:\Users\Josh Multiple libraries were found for "Adafruit_MPL115A2.h" Used: C:\Users\Josh Multiple libraries were found for "YosemitechModbus.h" Used: C:\Users\Josh Multiple libraries were found for "SdFat.h" Used: C:\Users\Josh Multiple libraries were found for "SPI.h" Used: C:\Program Multiple libraries were found for "SDI12_ExtInts.h" Used: C:\Users\Josh Multiple libraries were found for "PubSubClient.h" Used: C:\Users\Josh Multiple libraries were found for "DallasTemperature.h" Used: C:\Users\Josh Multiple libraries were found for "MS5803.h" Used: C:\Users\Josh Multiple libraries were found for "EnableInterrupt.h" Used: C:\Users\Josh Multiple libraries were found for "Sodaq_DS3231.h" Used: C:\Users\Josh Multiple libraries were found for "TinyGsmClient.h" Used: C:\Users\Josh Multiple libraries were found for "Adafruit_ADS1015.h" Used: C:\Users\Josh Multiple libraries were found for "SensorModbusMaster.h" Used: C:\Users\Josh Multiple libraries were found for "OneWire.h" Used: C:\Users\Josh Multiple libraries were found for "LoggerBase.h" Used: C:\Users\Josh Multiple libraries were found for "Wire.h" Used: C:\Program Multiple libraries were found for "Adafruit_AM2315.h" Used: C:\Users\Josh Multiple libraries were found for "Adafruit_Sensor.h" Used: C:\Users\Josh exit status 1 expected initializer before 'for' This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.