(venv) pi@rpi:~/scalex_controller $ export PYTHONASYNCIODEBUG=1
(venv) pi@rpi:~/scalex_controller $ make
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.971 seconds
WEIGHT 67
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.118 seconds
WEIGHT 127
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.139 seconds
======== Running on http://0.0.0.0:8080 ========
(Press CTRL+C to quit)
WEIGHT 187
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.135 seconds
WEIGHT 247
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.136 seconds
WEIGHT 307
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.132 seconds
WEIGHT 367
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.141 seconds
WEIGHT 427
[ERROR:0] global /tmp/pip-wheel-2l8ccy47/opencv-python/opencv/modules/videoio/src/cap.cpp (142) open VIDEOIO(CV_IMAGES): raised OpenCV exception:

OpenCV(4.4.0) /tmp/pip-wheel-2l8ccy47/opencv-python/opencv/modules/videoio/src/cap_images.cpp:293: error: (-215:Assertion failed) !_filename.empty() in function 'open'


Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.128 seconds
WEIGHT 487
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.132 seconds
WEIGHT 516
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.139 seconds
WEIGHT 527
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.129 seconds
WEIGHT 529
^CExecuting <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.134 seconds
WEIGHT 515
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.138 seconds
WEIGHT 507
Executing <Task pending coro=<WeightSource.listen_scales() running at /home/pi/scalex_controller/controller/devices/scale.py:102> created at /usr/lib/python3.7/asyncio/tasks.py:325> took 0.127 seconds

(venv) pi@rpi:~/scalex_controller $ unset PYTHONASYNCIODEBUG
(venv) pi@rpi:~/scalex_controller $ make
Task was destroyed but it is pending!
task: <Task pending coro=<handle_weight_event_creation() done, defined at /home/pi/scalex_controller/controller/services/weight_event.py:88> wait_for=<Future cancelled>>
Task was destroyed but it is pending!
task: <Task pending coro=<track_scales_availability() done, defined at /home/pi/scalex_controller/controller/services/tracker.py:22> wait_for=<Future cancelled>>
======== Running on http://0.0.0.0:8080 ========
(Press CTRL+C to quit)
^C