Loading TAK files fails with an exception:

E: 17:41:16,202 /usr/lib/python3.7/site-packages/picard/util/thread.run:51: Traceback (most recent call last):

File "/usr/lib/python3.7/site-packages/picard/util/thread.py", line 47, in run

result = self.func()

File "/usr/lib/python3.7/site-packages/picard/file.py", line 117, in _load_check

return self._load(filename)

File "/usr/lib/python3.7/site-packages/picard/formats/apev2.py", line 61, in _load

file = self._File(encode_filename(filename))

File "/usr/lib/python3.7/site-packages/mutagen/file.py", line 49, in __init_

self.load(*args, **kwargs)

File "/usr/lib/python3.7/site-packages/mutagen/_util.py", line 140, in wrapper

return func(self, h, *args, **kwargs)

File "/usr/lib/python3.7/site-packages/mutagen/apev2.py", line 740, in load

self.info = self._Info(fileobj)

File "/usr/lib/python3.7/site-packages/picard/formats/mutagenext/tak.py", line 38, in _init_

if len(header) != 4 or not header.startswith("tBaK"):

TypeError: startswith first arg must be bytes or a tuple of bytes, not str