Need Help for my Arduino IDE

b1nned · April 1, 2025, 3:37pm

Hello, Good day everyone! Can someone help me with this issue regarding on my Arduino IDE something is wrong I think. The codes works but then when I compile again there seem to be a problem.

CODE:

#define BLYNK_PRINT Serial

#define BLYNK_TEMPLATE_ID ""
#define BLYNK_TEMPLATE_NAME ""
#define BLYNK_AUTH_TOKEN ""

#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>
#include <Wire.h>
#include <DS3231.h>
#include <LiquidCrystal_I2C.h>
#include <EEPROM.h>
#include "GravityTDS.h"
#include "DHT.h"
#include <EEPROM.h>

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "";
char pass[] = "";

const unsigned long TIME_CHECK_BLYNK_CONNECTION = 60000;  // (ms) check device connection to blynk every this time


//pH normal range
const float NORMAL_RANGE_PH_MIN = 5.5; // minimum pH for normal
const float NORMAL_RANGE_PH_MAX = 7.5; // maximum pH for normal

This is what happen after compiling.


C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::ESP8266(Stream*)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::ESP8266(Stream*)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::checkIPD(String&)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::rx_empty()'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::run()'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::recvString(String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::recvString(String, String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::recvString(String, String, String, unsigned long)'

C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eATCWAUTOCONN(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::setAutoConnect(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::qATCIPSTAMAC(String&, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::getStationMac(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eATCIPSTAMAC(String, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::setStationMac(String, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::qATCIPSTAIP(String&, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::getStationIp(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eATCIPSTAIP(String, String, String, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::setStationIp(String, String, String, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::qATCIPAP(String&, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::getAPIp(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eATCIPAP(String, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::setAPIp(String, unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eCWSTARTSMART(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::startSmartConfig(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eCWSTOPSMART()'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::stopSmartConfig()'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eATCIPSTATUS(String&)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::getIPStatus()'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::sATCIPSTARTSingle(String, String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::createTCP(String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::registerUDP(String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::sATCIPSTARTMultiple(unsigned char, String, String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::createTCP(unsigned char, String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::registerUDP(unsigned char, String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::sATCIPSENDSingle(unsigned char const*, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::send(unsigned char const*, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::sATCIPSENDMultiple(unsigned char, unsigned char const*, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::send(unsigned char, unsigned char const*, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::sATCIPSENDSingleFromFlash(unsigned char const*, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here

C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::startTCPServer(unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::startServer(unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::stopTCPServer()'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::stopServer()'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::sATCIPMODE(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::setCIPMODE(unsigned char)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eATSAVETRANSLINK(unsigned char, String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::saveTransLink(unsigned char, String, unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::eATPING(String)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::setPing(String)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::sATCIPSTO(unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\libraries\BlynkESP8266-master\ESP8266.cpp.o (symbol from plugin): In function `ESP8266::ESP8266(Stream*)':
(.text+0x0): multiple definition of `ESP8266::setTCPServerTimeout(unsigned long)'
C:\Users\admin\AppData\Local\arduino\sketches\3F6475FDF187DB2301F8BC0A8F38F6CE\sketch\ESP8266.cpp.o (symbol from plugin):(.text+0x0): first defined here
collect2.exe: error: ld returned 1 exit status

exit status 1

Compilation error: exit status 1

PeteKnight · April 1, 2025, 5:31pm

@b1nned Please edit your post, using the pencil icon at the bottom, and add triple backticks at the beginning and end of your compiler error message so that it displays correctly.
Triple backticks look like this:
```

Copy and paste these if you can’t find the correct symbol on your keyboard.

Also, the compiler error message means nothing without the associated code that you were compiling at the time.
Use triple backticks when posing your code too.

Pete.

PeteKnight · April 2, 2025, 4:24pm

You’ve posted an incomplete sketch. It has no void setup or void loop, so I assume that you’ve truncated your sketch somehow.

Pete.