Finally

rpi/main.py

@@ -65,13 +65,12 @@ def start_party():
 def make_move():
     try:
         frame, fen = game_service.make_move()
-        encoded_frame = cv2.imencode('.jpg', frame, [int(cv2.IMWRITE_JPEG_QUALITY), 80])[1].tobytes()
         print(fen)
-
         headers = {'Content-Type': 'image/jpeg'}
+        body = {'frame': frame, 'fen': fen}
         response = requests.post(
             "https://192.168.15.125:1880/party/image",
-            data=encoded_frame,
+            data=body,
             headers=headers,
             verify=False)
         print(response.status_code)