Varför får jag “ förväntat primäruttryck före '. ' token ”?

Jag vet att det här är en vanlig fråga men sanningen är att varje kod är annorlunda. Ibland är det svårt att tillämpa konceptet på din kod, det fungerar inte. Så snälla hjälp mig. Vad är fel med den här koden? Jag fick den från GitHub. Jag försöker sammanställa den först innan jag kan göra lite modifiering skickar data om temp och fukt till ThingSpeak molnservrar.

#include <DHT.h> // Including library for dht #include <ESP8266WiFi.h> String api_key = "YOUR API KEY"; // Enter your Write API key from ThingSpeak const char *ssid = "YOUR WIFI SSID"; // replace with your wifi ssid and wpa2 key const char *pass = "YOUR WIFI PASSWORD"; const char* server = "api.thingspeak.com"; #define DHTPIN 1 // pin where the dht11 is connected DHT dht; WiFiClient client; void setup() { Serial.begin(115200); delay(10); pinMode(2, OUTPUT); digitalWrite(2, 0); Serial.println("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, pass); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected"); } void loop() { int chk = DHT.read(DHTPIN); float hum = DHT.humidity; float temp = DHT.temperature; if (isnan(hum) || isnan(temp)) { Serial.println("Failed to read from DHT sensor!"); return; } if (client.connect(server, 80)) { // "184.106.153.149" or api.thingspeak.com String data_to_send = api_key; data_to_send += "&field1="; data_to_send += hum; data_to_send += "&field2="; data_to_send += temp; data_to_send += "\r\n\r\n"; client.print("POST /update HTTP/1.1\n"); client.print("Host: api.thingspeak.com\n"); client.print("Connection: close\n"); client.print("X-THINGSPEAKAPIKEY: " + api_key + "\n"); client.print("Content-Type: application/x-www-form- urlencoded\n"); client.print("Content-Length: "); client.print(data_to_send.length()); client.print("\n\n"); client.print(data_to_send); delay(1000); Serial.print("Temperature: "); Serial.print(temp); Serial.print(" degrees Celcius, Humidity: "); Serial.print(hum); Serial.println("%. Send to Thingspeak."); } client.stop(); Serial.println("Waiting..."); // ThingSpeak needs minimum 15 sec delay between updates, I"ve set it to 30 seconds delay(10000); } 

När jag kompilerar får jag det här felet,

 Arduino: 1.8.10 (Windows 10), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Legacy (new can return nullptr), All SSL ciphers (most compatible), 4MB (FS:2MB OTA:~1019KB), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200" C:\Users\Agent 96\Desktop\thingspeak\thingspeak.ino: In function "void loop()": thingspeak:37:20: error: expected primary-expression before "." token int chk = DHT.read(DHTPIN); ^ thingspeak:38:22: error: expected primary-expression before "." token float hum = DHT.humidity; ^ thingspeak:39:23: error: expected primary-expression before "." token float temp = DHT.temperature; ^ Multiple libraries were found for "DHT.h" Used: C:\Users\Agent Not used: C:\Users\Agent Multiple libraries were found for "ESP8266WiFi.h" Used: C:\Users\Agent exit status 1 expected primary-expression before "." token This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences. 

Snälla hjälp, jag är en nybörjare.