TypeError: build() takes 2 positional arguments but 3 were given

[knowhy]

I'm getting TypeError: build() takes 2 positional arguments but 3 were given when trying to follow the instructions from the UPDATE-howto

mirobo --ip=192.168.8.1 --token=TOKEN raw_command miIO.ota '{"mode":"normal", "install":"1", "app_url":"http://192.168.8
.61/v11_003094.pkg", "file_md5":"a086f93a4cafdd3714163f940740783f", "proc":"dnld install"}'
Sending cmd miIO.ota with params {'mode': 'normal', 'install': '1', 'app_url': 'http://192.168.8.61/v11_003094.pkg', 'file_md5': 'a086f93a4cafdd37141
63f940740783f', 'proc': 'dnld install'}
Traceback (most recent call last):
File "/usr/bin/mirobo", line 11, in
load_entry_point('python-miio==0.3.4', 'console_scripts', 'mirobo')()
File "/usr/lib/python3.6/site-packages/click/core.py", line 722, in call
return self.main(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/usr/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/lib/python3.6/site-packages/click/core.py", line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/lib/python3.6/site-packages/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/click/decorators.py", line 64, in new_func
return ctx.invoke(f, obj, *args[1:], **kwargs)
File "/usr/lib/python3.6/site-packages/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/miio/vacuum_cli.py", line 517, in raw_command
click.echo(vac.raw_command(cmd, params))
File "/usr/lib/python3.6/site-packages/miio/vacuum.py", line 270, in raw_command
return self.send(cmd, params)
File "/usr/lib/python3.6/site-packages/miio/device.py", line 216, in send
m = Message.build(msg, ctx)
TypeError: build() takes 2 positional arguments but 3 were given

The flasher.py script gives me the same error:

python flasher.py -a 192.168.8.1 -t TOKEN -f v11_003094.pkg
Flasher for Xiaomi Vacuum
Connecting to device 192.168.8.1...
error while checking device: build() takes 2 positional arguments but 3 were given

[rytilahti]

rytilahti/python-miio#192 contains the fix, which will be in the next python-miio release. For the time being you could downgrade construct to 2.9.22 or alternatively install python-miio from git.

[knowhy]

Thanks. I downgraded construct to 2.8.22 (as 2.9.22 is not available via pip and 2.9.23 gave the same error). Issue is resolved.