Multiple libraries were found for

Development Tools IDE 1.x
1

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Hello Guys I have got such problem in NODE MCU any idea?

c:/users/adnan channa/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: sketch\RelaySwitch.ino.cpp.o:(.text.setup+0x34): undefined reference to `connectUDP()'

c:/users/adnan channa/appdata/local/arduino15/packages/esp8266/tools/xtensa-lx106-elf-gcc/2.5.0-3-20ed2b9/bin/../lib/gcc/xtensa-lx106-elf/4.8.2/../../../../xtensa-lx106-elf/bin/ld.exe: sketch\RelaySwitch.ino.cpp.o: in function `setup':

C:\Users\Adnan Channa\Desktop\RelaySwitch/RelaySwitch.ino:85: undefined reference to `connectUDP()'

collect2.exe: error: ld returned 1 exit status

Multiple libraries were found for "ESP8266WiFi.h"
Used: C:\Users\Adnan
Multiple libraries were found for "ESP8266WebServer.h"
Used: C:\Users\Adnan
Multiple libraries were found for "EEPROM.h"
Used: C:\Users\Adnan
Multiple libraries were found for "ESP8266HTTPClient.h"
Used: C:\Users\Adnan
exit status 1
Error compiling for board NodeMCU 1.0 (ESP-12E Module)./>

arduino.jpg
arduino.jpg1280×720 158 KB

2

Very simple: the compiler is missing the function "connectUDP()". That looks like a missed library.
Without your sketch there is not more info.
Please read the post at the top of this forum! (MOD EDIT)

3 
thanks dear and what about  Multiple libraries were found for "ESP8266WebServer.h" ?
4

If you use the IDE Arduino 1.8.10 simple ignore it.
Is is a small malfunction of the actual IDE - but not enough for a new Version.