AttributeError: 'str' object has no attribute 'get' for vk.vom

[MaxiFilippov]

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2019.11.05
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

I get video info in Python this way

import youtube_dl
from functools import partial
import asyncio
loop = asyncio.get_event_loop()
ydl = youtube_dl.YoutubeDL(
{'proxy': proxy, "username": "",
"password": ""})
with ydl:
extract = partial(ydl.extract_info, url, download=False)
meta = loop.run_in_executor(None, extract)

And when I set username and password I get error AttributeError: 'str' object has no attribute 'get'

Without username and password everything works properly.
Full stacktrace

Traceback (most recent call last):
File "/home/max/Telegram/avd/vkquality.py", line 30, in get_meta
meta = await self.loop.run_in_executor(None, extract)
File "/usr/lib/python3.7/concurrent/futures/thread.py", line 57, in run
result = self.fn(*self.args, **self.kwargs)
File "/home/max/.local/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 796, in extract_info
ie_result = ie.extract(url)
File "/home/max/.local/lib/python3.7/site-packages/youtube_dl/extractor/common.py", line 530, in extract
ie_result = self._real_extract(url)
File "/home/max/.local/lib/python3.7/site-packages/youtube_dl/extractor/vk.py", line 320, in _real_extract
mv_data = opts.get('mvData') or {}
AttributeError: 'str' object has no attribute 'get'

I use the latest version of ydl, python3.7 and ubuntu 19.04
url to download https://vk.com/video-89926964_456240478?list=7454fac6ceebdcfe01