Arduino ESP8266 Driver error

Development
1

Hi may someone help me with this?

I just trying with the example.

C:\Users\andre\AppData\Local\Temp\.arduinoIDE-unsaved202333-24780-140m72o.0rirf\GPSClient\GPSClient.ino: In function 'void node_report_callback(mt_node_t*, mt_nr_progress_t)':
C:\Users\andre\AppData\Local\Temp\.arduinoIDE-unsaved202333-24780-140m72o.0rirf\GPSClient\GPSClient.ino:116:28: error: 'struct mt_node_t' has no member named 'ground_track'
  116 |     Serial.print(nodeinfo->ground_track);
      |                            ^~~~~~~~~~~~

exit status 1

Compilation error: 'struct mt_node_t' has no member named 'ground_track'