debug lines

main.py

@@ -20,6 +20,7 @@ from collections import deque
 import numpy as np
 import aiohttp
 import httpx
+import time
 
 from serial_manager import SerialConfig, SerialStore, SerialReader
 from protocol_decoder import decode_frames
@@ -309,6 +310,7 @@ def send_command(state: str, pu_number: int, ploop_setpoint: float = Query(...),
         }
 
     except Exception as e:
+        logging.error(str(e))
         raise HTTPException(status_code=500, detail=str(e))
 
 ## MONITORING