Assuming fixed resistance return value from trainer

[paha77]

Today I wanted to ride in Zwift with my Fortius (1932) and Antifier.

I've started the script from Ubuntu Command line as usual:

python antifier.py -l -c power_calc_factors_fortius.txt -d

I've started on a flat route in Zwift but it does not matter what happens, the resistance level on the trainer is always 7. At the beginning the script says

Assuming fixed resistance return value from trainer

Maybe this is the reason but earlier it was working OK or, at least the script was able to change the resistance level.

Debug log: zwift-test-20171210-01.log