KeyError: 'html' when trying to pull #19

While trying to reproduce #18 I ran into this. Using a fresh etherpad instance (see https://git.vvvvvvaria.org/varia/etherpump#testing) and a single pad. Once I pass --all first, it then downloads everything. After this, using only --magicwords- does not fail.

➜  etherpump (main) ✗ poetry run etherpump pull --magicwords 
===============================================================================
Etherpump is warming up the engines ...
===============================================================================
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/decentral1se/work/etherpump/etherpump/__init__.py", line 93, in main
    cmdmod.main(args)
  File "/home/decentral1se/work/etherpump/etherpump/commands/pull.py", line 579, in main
    trio.run(handle_pads, args)
  File "/home/decentral1se/.cache/pypoetry/virtualenvs/etherpump-edQNCuEO-py3.9/lib/python3.9/site-packages/trio/_core/_run.py", line 1928, in run
    raise runner.main_task_outcome.error
  File "/home/decentral1se/work/etherpump/etherpump/commands/pull.py", line 561, in handle_pads
    nursery.start_soon(
  File "/home/decentral1se/.cache/pypoetry/virtualenvs/etherpump-edQNCuEO-py3.9/lib/python3.9/site-packages/trio/_core/_run.py", line 815, in __aexit__
    raise combined_error_from_nursery
  File "/home/decentral1se/work/etherpump/etherpump/commands/pull.py", line 498, in handle_pad
    html_body = html["data"]["html"]
KeyError: 'html'

This happened to me too, yeah. No idea what the cause is.