rov@rov-desktop:~/Documents/salem/depthai$ python3 depthai_demo.py -usbs usb2
Using depthai module from:  /home/rov/.local/lib/python3.6/site-packages/depthai.cpython-36m-aarch64-linux-gnu.so
Depthai version installed:  2.15.3.0
Setting up demo...
Available devices:
[0] 18443010A150420E00 [X_LINK_UNBOOTED]
USB Connection speed: UsbSpeed.HIGH
Enabling low-bandwidth mode due to low USB speed... (speed: UsbSpeed.HIGH)
[18443010A150420E00] [1266.977] [system] [critical] Fatal error. Please report to developers. Log: 'Fatal error on MSS CPU: trap: 09, address: 802809CC' '0'
[CRITICAL] [0:21:06.977223] Fatal error. Please report to developers. Log: 'Fatal error on MSS CPU: trap: 09, address: 802809CC' '0'
Traceback (most recent call last):
  File "depthai_demo.py", line 1081, in <module>
    runOpenCv()
  File "depthai_demo.py", line 1071, in runOpenCv
    demo.run_all(confManager)
  File "depthai_demo.py", line 129, in run_all
    self.run()
  File "depthai_demo.py", line 295, in run
    self._device.startPipeline(self._pm.pipeline)
depthai.XLinkReadError: Couldn't read data from stream: '__rpc_main' (X_LINK_ERROR)
Stopping demo...
=== TOTAL FPS ===
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "depthai_demo.py", line 359, in stop
    self._pv.closeQueues()
  File "/home/rov/Documents/salem/okd_frames/depthai/depthai_sdk/src/depthai_sdk/managers/preview_manager.py", line 100, in closeQueues
    for queue in self.outputQueues:
AttributeError: 'PreviewManager' object has no attribute 'outputQueues'