Memory out trouble

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•
Planer
Hi gyes. Recently write code of internet online clock. But my happiness was not long, because i had unresolved trouble for me. All of operativ memory for some time is went out, and code is stopping. Where could I make a mistake and how to fix it?
p.s Intervals of lost all memory every time is different.
all code:
I2C1.setup({ scl: 5, sda: 4 });
var wifi = require("Wifi");
var esp8266 = require("ESP8266");

var lcd;
var masterPass = "q1w2e3r4";
var serverStarted = false;
var allDate = "";
var yr = 999;
var oldYr = 99;
var mns = 999;
var oldMns = 99;
var dy = 999;
var oldDy = 99;
var hr = 999;
var oldHr = 99;
var min = 999;
var oldMin = 99;
var sec = 999;
var oldSec = 99;

//setup part--------------------------------------------------------------------------
wifi.on('sta_joined', function (details) {
  if (!serverStarted) {
    serverStart();
    serverStarted = true;
  }
});

function getPage(text) {
  text = typeof text !== 'undefined' ? text : wifi.getStatus().station;
  return `<!doctype html>
  <html>
  <head>
      <title>System setup</title>
  </head>
  <body>
  <p style="text-align: center;">Status: `+ text + `</p>
  <form action="" method="post">
  <h2 style="text-align: center;">Setup configuration:</h2>
  <hr />
  <p style="text-align: center;"><span style="color:#FF0000;">Access pass:&nbsp;<input name="accpsName" required type="password" /></span></p>
  <p style="text-align: center;"><span style="color:#000000;">SSID name:&nbsp;<input name="ssidName" required type="text" /></span></p>
  <p style="text-align: center;"><span style="color:#000000;">SSID pass:&nbsp;<input name="passName" type="password" /></span></p>
  <p style="text-align: center;"><input type="submit" value="SEND" /></p>
  </form>
  <p style="text-align: center;">&nbsp;</p>
  </body>
  </html>`;
}

function parseData(data) {
  var arr = data.split("&");
  var result = {};

  arr.forEach(function (pair) {
    var elem = pair.split("=");
    result[elem[0]] = elem[1];
  });
  return result;
}

function serverStart() {
  function onPageRequest(req, res) {
    var reqData;
    if (req.method == "GET") {
      res.writeHead(200, { 'Content-Type': 'text/html' });
      res.end(getPage());
    } else {
      req.on("close", function () {
        reqData = req.read();
        reqData = parseData(reqData);
        if (reqData.accpsName == masterPass) {
          wifi.connect(reqData.ssidName, { password: reqData.passName }, function (ap) { });
          wifi.save();
          setTimeout(function () {
            esp8266.reboot();
          }, 5000);
        }
      });
      res.writeHead(200, { 'Content-Type': 'text/html' });
      res.end(getPage());
    }
  }
  require("http").createServer(onPageRequest).listen(8080);
}

//Inet time part-------------------------------------------------------------------------
wifi.on('connected', function (details) {
  lcd = require("HD44780").connectI2C(I2C1, 0x27);
  if (!serverStarted) {
    serverStart();
    serverStarted = true;
  }
  /*if (wifi.getStatus().station != "connected") {
    lcd.clear();
    lcd.setCursor(0, 3);
    lcd.print("setup wifi connection");
  }*/
  setInterval(function () {
    try { getTimeOnline(); } catch (error) { }
    updateDisplay();
  }, 1000);
});

function getTimeOnline() {
  allDate = "";
  var options = {
    host: 'api.timezonedb.com',
    port: '80',
    path: '/v2/get-time-zone?format=json&by=zone&zone=Europe/Minsk&key=5CZHRPQ83HOC',
    method: 'GET',
    headers: { "Content-Type": "application/json" }
  };
  require("http").request(options, function (res) {
    res.on('data', function (partOfData) {
      allDate += partOfData;
    });
    res.on('close', function (data) {
      try {
        allDate = allDate.split('{');
        allDate = allDate[1].split('}');
        allDate = '{' + allDate[0] + '}';
        allDate = JSON.parse(allDate);
        displayTextParse(allDate.formatted);
      } catch (error) { }
    });
  }).end();
}

function displayTextParse(params) {
  var date = params.split("-");
  var temp = date[2].split(" ");
  date[2] = temp[0];
  var tme = temp[1];
  tme = tme.split(":");

  yr = date[0];
  mns = date[1];
  dy = date[2];
  hr = tme[0];
  min = tme[1];
  sec = tme[2];
}

function updateDisplay() {
  if (oldYr != yr) {
    lcd.setCursor(0, 1);
    lcd.print(yr);
    oldYr = yr;
    lcd.print("-");
  }
  if (oldMns != mns) {
    lcd.setCursor(5, 1);
    lcd.print(mns);
    oldMns = mns;
    lcd.print("-");
  }
  if (oldDy != dy) {
    lcd.setCursor(8, 1);
    lcd.print(dy);
    oldDy = dy;
    lcd.print(" ");
  }
  if (oldHr != hr) {
    lcd.setCursor(12, 1);
    lcd.print(hr);
    oldHr = hr;
    lcd.print(":");
  }
  if (oldMin != min) {
    lcd.setCursor(15, 1);
    lcd.print(min);
    oldMin = min;
    lcd.print(":");
  }
  if (oldSec != sec) {
    lcd.setCursor(18, 1);
    lcd.print(sec);
    oldSec = sec;
  }
}
Memory out trouble

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Espruino
