Berlin Uhr

Are there any who can help me
I'm brand new to Arduino and trying to make Berlin Uhr
But all the time problems with error compiling.
"'time_t time' redeclared as different kind of symbol".
This is the whole bug list.

Arduino: 1.8.9 (Windows 10), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Disabled, All SSL ciphers (most compatible), 4M (no SPIFFS), v2 Lower Memory, Disabled, None, Only Sketch, 115200"

Berlin-uhr:60:8: error: 'time_t time' redeclared as different kind of symbol

time_t time;

^

In file included from C:\Users\bruger\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2/tools/sdk/libc/xtensa-lx106-elf/include/stdlib.h:11:0,

from C:\Users\Flkoch\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266/Arduino.h:27,

from C:\Users\Flkoch\Documents\Arduino\libraries\DCF77/DCF77.h:5,

from C:\Users\bruger\Desktop\3d\Berlin_Clock_BerlinUhr_\Berlin-uhr\Berlin-uhr.ino:5:

C:\Users\bruger\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2/tools/sdk/libc/xtensa-lx106-elf/include/time.h:53:18: error: previous declaration of 'time_t time(time_t*)'

time_t _EXFUN(time, (time_t *_timer));

^

C:\Users\Bruger\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2/tools/sdk/libc/xtensa-lx106-elf/include/_ansi.h:65:30: note: in definition of macro '_EXFUN'

#define _EXFUN(name, proto) name proto

^

C:\Users\bruger\Desktop\3d\Berlin_Clock_BerlinUhr_\Berlin-uhr\Berlin-uhr.ino: In function 'void loop()':

Berlin-uhr:234:20: error: 'setTime' was not declared in this scope

setTime(DCFtime);

^

C:\Users\bruger\Desktop\3d\Berlin_Clock_BerlinUhr_\Berlin-uhr\Berlin-uhr.ino: In function 'void digitalClockDisplay()':

Berlin-uhr:290:21: error: 'hour' was not declared in this scope

Serial.print(hour());

^

Berlin-uhr:292:22: error: 'minute' was not declared in this scope

printDigits(minute());

^

Berlin-uhr:294:22: error: 'second' was not declared in this scope

printDigits(second());

^

Berlin-uhr:297:20: error: 'day' was not declared in this scope

Serial.print(day());

^

Berlin-uhr:300:22: error: 'month' was not declared in this scope

Serial.print(month());

^

Multiple libraries were found for "DCF77.h"
Used: C:\Users\bruger\Documents\Arduino\libraries\DCF77
Not used: C:\Users\bruger\Documents\Arduino\libraries\DCF77-1.0.0
Multiple libraries were found for "TimeLib.h"
Used: C:\Users\bruger\Documents\Arduino\libraries\TimeLib-master
Not used: C:\Users\bruger\Documents\Arduino\libraries\Time
Multiple libraries were found for "RTClib.h"
Used: C:\Users\bruger\Documents\Arduino\libraries\RTClib
Not used: C:\Users\bruger\Documents\Arduino\libraries\RTCLib_by_NeiroN
exit status 1
'time_t time' redeclared as different kind of symbol

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Thanks to the one who will help a new beginner

Berlin-uhr.ino (12.6 KB)

There are multiple libraries that contain "RTClib.h". Which one does the author use?