如何将串行数据存储到数组以发送到服务器？

我试图将串行数据存储到一个数组，然后将所有数组转换为一个字符串，然后将其发送到服务器。但我不断收到“非类类型”错误
我正在排队的神一次响应一个字节。任何建议表示赞赏！
代码：全选#include
int incomingByte[13] ;       //array of data
String page1;
#define mdDeRe 14 // GPIO14 = D5  // sends signal to device.
ESP8266WebServer server(80);

void getdata1 (){
  digitalWrite(mdDeRe, HIGH);   /// enable receiver to receive data
  Serial.write(17);     ///// <<<---- maybe this can be written better
  Serial.write(3);
  Serial.write(0);
  Serial.write(84);
  Serial.write(0);
  Serial.write(4);
  Serial.write(7);
  Serial.write(73);
  Serial.flush();
  digitalWrite(mdDeRe,LOW);    //// enables device to send data


    //// store received bytes into an array /////
   if (Serial.available()) {
      for (int i=0; i<13; i ++){
      incomingByte = Serial.read();
        }
      }  
  /// Here I would like to send the whole array to server
      page1 = incomingByte.toString();
      server.send(200, "text/plane",page1); //sends data to server
   }