Opening a WAV file currently fails with

E: 19:05:25 Traceback (most recent call last):
File "./picard/util/thread.py", line 46, in run
result = self.func()
File "./picard/file.py", line 117, in _load_check
return self._load(filename)
File "./picard/formats/wav.py", line 35, in _load
f = wave.open(encode_filename(filename), "rb")
File "/usr/lib/python3.6/wave.py", line 499, in open
return Wave_read(f)
File "/usr/lib/python3.6/wave.py", line 163, in _init_
self.initfp(f)
File "/usr/lib/python3.6/wave.py", line 128, in initfp
self._file = Chunk(file, bigendian = 0)
File "/usr/lib/python3.6/chunk.py", line 61, in _init_
self.chunkname = file.read(4)
AttributeError: 'bytes' object has no attribute 'read'