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deserializeJson() failed: NoMemory

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#include <ESP8266WebServer.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <Wire.h>
#include <SPI.h>
#include <ArduinoJson.h>

#include <MD_Parola.h>
#include <MD_MAX72xx.h>

// Parametrage matrice  ( Pin Arduino ou est branché la matrice )
#define MAX_DEVICES 4 // ( nombre de matrice )
#define CLK_PIN   D5
#define DATA_PIN  D7
#define CS_PIN    D6
#define  MAX_INTENSITY 0xf



// initialisation de la matrice
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
MD_Parola P = MD_Parola(HARDWARE_TYPE,CS_PIN, MAX_DEVICES);
//MD_Parola P = MD_Parola(DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

unsigned long delayTime;


const char* ssid     = "xxxxxxx"; //Nom du reseau wifi
const char* password = "xxxxxxx"; //mot de passe

const char* host = "192.168.0.236"; //Domoticz
const char* url = "/json.htm?type=devices&rid=194"; //Url du device à analyser


const uint16_t port = 8080;
const int   watchdog = 30000; // Fréquence de reception des données  Domoticz 
unsigned long previousMillis = millis();

ESP8266WebServer server ( 80 );
HTTPClient http;

 

void setup() {


 //init affichage
  P.begin();
  
  Serial.setDebugOutput(true);
  Serial.begin(115200);
  
#ifdef  __AVR_ATmega32U4__  // If this is a 32U4 processor, then wait 3 seconds to initialize USB
    delay(3000);
  #endif
    

  
  Serial.setDebugOutput(true);
  Serial.println("Connecting Wifi...");

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }


  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

}

int value = 0;

void loop() {

unsigned long currentMillis = millis();



if ( currentMillis - previousMillis > watchdog ) {
    previousMillis = currentMillis;
  
  WiFiClient client;
  if (!client.connect(host, port)) {
    Serial.println("connection failed");
    delay(500);
    return;
  }

   if(WiFi.status() != WL_CONNECTED) {
      Serial.println("WiFi not connected !");
    } else {  
      Serial.println("reception data de Domoticz");

  Serial.println("passage ok");


  // Check HTTP status


  http.begin(host, port, url);
  int httpCode = http.GET();
  if (httpCode) {
    if (httpCode == 200) {
      String client = http.getString();
     Serial.println("200 OK");
    }
  }

  // Send HTTP request
  client.println(F("GET /json.htm?type=devices&rid=194 HTTP/1.0"));
  client.println(F("Host: http://192.168.0.236:8080"));
  client.println(F("Connection: close"));
  if (client.println() == 0) {
    Serial.println(F("Failed to send request"));
    return;
  }

  Serial.println("passage 2 ok");
  // Skip HTTP headers
  char endOfHeaders[] = "\r\n\r\n";
  if (!client.find(endOfHeaders)) {
    Serial.println(F("Invalid response"));
    return;
  }

  Serial.println("passage 3 ok");

  // Allocate the JSON document
  // Use arduinojson.org/assistant to compute the capacity.
  const size_t capacity = 2*JSON_ARRAY_SIZE(1) + JSON_OBJECT_SIZE(16) + JSON_OBJECT_SIZE(34) + 1559;
  DynamicJsonDocument doc(capacity);

  Serial.println(capacity);

  // Parse JSON object
  DeserializationError error = deserializeJson(doc, client);
  if (error) {
    Serial.print(F("deserializeJson() failed: "));
    Serial.println(error.c_str());
    return;
  }

  // Extract values
  JsonObject root = doc.as<JsonObject>();
  Serial.println(F("Response:"));

  long ActTime = root["ActTime"];
  const char* ServerTime = doc["ServerTime"];
  JsonObject result_0 = root["result"][0];
  const char* result_0_Data = result_0["Data"];
  const char* result_0_Name = result_0["Name"];
  float result_0_Temp = result_0["Temp"];
  

  Serial.println(ServerTime);
  Serial.println(result_0_Temp);
  Serial.println(result_0_Name);
  Serial.println(result_0_Data);

  P.begin();
 
  P.print(result_0_Data);

  // Disconnect
  client.stop();

 
   }
 
 
    }


}

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Serial.println("Reset..");
    ESP.restart();

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loop() {
  # la partie du code à déplacer
}

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maRoutine(): {
   # la partie du code à déplacer
}

loop: {
    maRoutine();
}