get an onwire.h error

Hardware Arduino Due
3

i updated my both librarys, Dallas and OneWire, now i got

wifiTestServer.ino: In function 'void sendMessage(float)':
wifiTestServer:138: error: 'PSTR' was not declared in this scope

void sendMessage(float value)
{
  client.println(F("HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-length: 29\r\n\r\n"));
  client.println();
  client.println(F("<html>"));
  client.println("<body>");
  client.println(value);
  client.println("C");
  client.println("</body>");
  client.println(F("</html>"));
  delay(1);
  char c = client.read();
}

found the mistake thankssssssss