Deploying release throws unhandled exception on FiPy device

[Teemu Pyhäluoto]

I created a zip file of simple RGB led blinker test software, created a release for it and tried to deploy it through Pybytes. As soon as deployment is initiated in web interface, device will throw an unhandled exception. I tried this multiple times.

Interestingly I did try OTA firmware update in device section, and that completed successfully.

What could be the issue here? Unhandled exception doesn't seem correct, so this feels like a bug in the firmware.

Firmware: 1.20.2.r2
Pybytes: 1.6.1
Initialized watchdog for WiFi and LTE connection with timeout 1260000 ms
LTE connection established
connect_lte with start_mqtt is now removed please call communication_protocol or start_mqtt directly
Connected to MQTT mqtt.pybytes.pycom.io
Pybytes connected successfully (using the built-in pybytes library)
Pybytes configuration read from /flash/pybytes_config.json
Pycom MicroPython 1.20.2.r2 [v1.11-3a7776d] on 2020-11-23; FiPy with ESP32
Pybytes Version: 1.6.1
Type "help()" for more information.
>>> Unhandled exception in thread started by <bound_method>
Traceback (most recent call last):
  File "_msg_handl.py", line 259, in _io_thread_func
  File "_msg_handl.py", line 197, in _receive_packet
  File "_mqtt_core.py", line 398, in _recv_callback
  File "_mqtt_core.py", line 368, in _parse_publish
  File "_mqtt_core.py", line 341, in _notify_message
  File "_mqtt.py", line 91, in set_callback
  File "_pybytes_protocol.py", line 184, in __process_recv_message
  File "_pybytes_protocol.py", line 833, in deploy_new_release
  File "_pybytes_protocol.py", line 718, in update_files
  File "_flash_control_OTA.py", line 42, in update_file_content
OSError: [Errno 19] ENODEV

[Gijs]

Hi,
Sorry I must have missed your topic last week,
The ENODEV error occurs when the device is not available, for example like this:

>>> open('/sd/file.py','w')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: [Errno 19] ENODEV
>>> open('/flash/file.py','w')
<io.TextIOWrapper 3f94f010>
>>> open('/lib/file.py','w')

Which is basically the operation where it stops working.
When I try to write a file to the SD card or lib folder on root, which is not there, it will return the error. Similarly,

>>>open('/flash/lib/file.py', 'w')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: [Errno 2] ENOENT

Will give the error for NO ENTRY, as I did not create the lib folder in /flash/
You are probably supposed to put the files inside a flash or lib folder? Check the pymakr online interface to see if it is correct. Let me know!

Gijs