a

robomaster_pi/command_executer.py

@@ -4,6 +4,7 @@ from std_msgs.msg import String
 import subprocess
 import threading
 import signal
+import os
 
 class CommandExecutor(Node):
     def __init__(self):
@@ -42,7 +43,7 @@ class CommandExecutor(Node):
         if name in self.running_processes:
             try:
                 process_handle = self.running_processes[name]
-                process_handle.send_signal(signal.SIGINT)
+                os.kill(process_handle.pid, signal.SIGINT)
                 process_handle.wait(timeout=30)
             except subprocess.TimeoutExpired:
                 process_handle.kill()