Compiling error, weekday is not recognized

[prince2k22]

Dear sir,
I am new in this environment. seeing various videos and looking into a number of similar sketches, This one looks promising.
However I am not capable of compiling the project in Arduino 2.3 environment. I have also tried the earlier ver. without success.
Compiler provides bellow error, which mainly caused by Time.h library I have also tried out with TimeLib.h with the same result.
I will appreciate any feedback to get me on going with this.

C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino: In function 'void printTime()':
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:281:10: error: 'weekday' was not declared in this scope
switch (weekday())
^~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:293:14: error: 'hour' was not declared in this scope
printDigits(hour());
^~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:295:14: error: 'minute' was not declared in this scope
printDigits(minute());
^~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:295:14: note: suggested alternative: 'finite'
printDigits(minute());
^~~~~~
finite
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:297:14: error: 'second' was not declared in this scope
printDigits(second());
^~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:297:14: note: suggested alternative: 'sysconf'
printDigits(second());
^~~~~~
sysconf
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino: In function 'int WlanReadWpa()':
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:443:2: error: 'readConfig' was not declared in this scope
readConfig( CONFIGFILE, &gwayConfig);
^~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:443:2: note: suggested alternative: 'gwayConfig'
readConfig( CONFIGFILE, &gwayConfig);
^~~~~~~~~~
gwayConfig
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino: In function 'int WlanConnect(int)':
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:556:3: error: 'writeGwayCfg' was not declared in this scope
writeGwayCfg(CONFIGFILE);
^~~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino: In function 'int readUdp(int)':
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:752:8: error: 'sendPacket' was not declared in this scope
if (sendPacket(data, packetSize-4) < 0) {
^~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:752:8: note: suggested alternative: 'sendstat'
if (sendPacket(data, packetSize-4) < 0) {
^~~~~~~~~~
sendstat
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino: In function 'void sendstat()':
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1071:9: error: 'now' was not declared in this scope
t = now(); // get timestamp for statistics
^~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1071:9: note: suggested alternative: 'pow'
t = now(); // get timestamp for statistics
^~~
pow
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:63: error: 'year' was not declared in this scope
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:63: note: suggested alternative: 'read'
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~~
read
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:70: error: 'month' was not declared in this scope
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:78: error: 'day' was not declared in this scope
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:84: error: 'hour' was not declared in this scope
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:91: error: 'minute' was not declared in this scope
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:91: note: suggested alternative: 'finite'
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~~~~
finite
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:100: error: 'second' was not declared in this scope
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1074:100: note: suggested alternative: 'sysconf'
sprintf(stat_timestamp, "%04d-%02d-%02d %02d:%02d:%02d CET", year(),month(),day(),hour(),minute(),second());
^~~~~~
sysconf
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino: In function 'void setup()':
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1298:9: error: 'timeStatus' was not declared in this scope
while (timeStatus() == timeNotSet) {
^~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1298:9: note: suggested alternative: 'timerStarted'
while (timeStatus() == timeNotSet) {
^~~~~~~~~~
timerStarted
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1298:25: error: 'timeNotSet' was not declared in this scope
while (timeStatus() == timeNotSet) {
^~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1298:25: note: suggested alternative: 'timerStart'
while (timeStatus() == timeNotSet) {
^~~~~~~~~~
timerStart
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1303:21: error: 'setTime' was not declared in this scope
if (newTime != 0) setTime(newTime);
^~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1303:21: note: suggested alternative: 'newTime'
if (newTime != 0) setTime(newTime);
^~~~~~~
newTime
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1308:2: error: 'writeGwayCfg' was not declared in this scope
writeGwayCfg(CONFIGFILE );
^~~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1314:2: error: 'setupWWW' was not declared in this scope
setupWWW();
^~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1314:2: note: suggested alternative: 'setup'
setupWWW();
^~~~~~~~
setup
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1321:2: error: 'initLoraModem' was not declared in this scope
initLoraModem();
^~~~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1325:3: error: 'cadScanner' was not declared in this scope
cadScanner(); // Always start at SF7
^~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1329:3: error: 'rxLoraModem' was not declared in this scope
rxLoraModem();
^~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1347:2: error: 'writeConfig' was not declared in this scope
writeConfig( CONFIGFILE, &gwayConfig); // Write config
^~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1347:2: note: suggested alternative: 'gwayConfig'
writeConfig( CONFIGFILE, &gwayConfig); // Write config
^~~~~~~~~~~
gwayConfig
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino: In function 'void loop()':
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1394:3: error: 'stateMachine' was not declared in this scope
stateMachine(); // start the state machine
^~~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1394:3: note: suggested alternative: 'stattime'
stateMachine(); // start the state machine
^~~~~~~~~~~~
stattime
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1407:3: error: 'initLoraModem' was not declared in this scope
initLoraModem();
^~~~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1410:4: error: 'cadScanner' was not declared in this scope
cadScanner();
^~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1414:4: error: 'rxLoraModem' was not declared in this scope
rxLoraModem();
^~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1416:3: error: 'writeRegister' was not declared in this scope
writeRegister(REG_IRQ_FLAGS_MASK, (uint8_t) 0x00);
^~~~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1416:3: note: suggested alternative: 'register'
writeRegister(REG_IRQ_FLAGS_MASK, (uint8_t) 0x00);
^~~~~~~~~~~~~
register
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1490:4: error: 'hop' was not declared in this scope
hop();
^~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1490:4: note: suggested alternative: '_hop'
hop();
^~~
_hop
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1499:4: error: 'rxLoraModem' was not declared in this scope
rxLoraModem();
^~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1501:4: error: 'hop' was not declared in this scope
hop();
^~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1501:4: note: suggested alternative: '_hop'
hop();
^~~
_hop
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1505:5: error: 'cadScanner' was not declared in this scope
cadScanner();
^~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1568:3: error: 'initLoraModem' was not declared in this scope
initLoraModem();
^~~~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1571:4: error: 'cadScanner' was not declared in this scope
cadScanner();
^~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1575:4: error: 'rxLoraModem' was not declared in this scope
rxLoraModem();
^~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1577:3: error: 'writeRegister' was not declared in this scope
writeRegister(REG_IRQ_FLAGS_MASK, (uint8_t) 0x00);
^~~~~~~~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1577:3: note: suggested alternative: 'register'
writeRegister(REG_IRQ_FLAGS_MASK, (uint8_t) 0x00);
^~~~~~~~~~~~~
register
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1601:21: error: 'setTime' was not declared in this scope
if (newTime != 0) setTime(newTime);
^~~~~~~
C:\Users\User\Documents\Arduino\ESP-sc-gway\ESP-sc-gway.ino:1601:21: note: suggested alternative: 'newTime'
if (newTime != 0) setTime(newTime);
^~~~~~~
newTime
Multiple libraries were found for "WebServer.h"
Used: C:\Users\User\AppData\Local\Arduino15\packages\Heltec-esp32\hardware\esp32\0.0.7\libraries\WebServer
Not used: C:\Users\User\Documents\Arduino\ESP-sc-gway\libraries\WebServer_tng
exit status 1

Compilation error: 'weekday' was not declared in this scope