Picard 2.0.3 fails to load OptimFROG files on Linux (and likely also macOS):

E: 23:10:49,685 /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 112, in _load

self._info(metadata, file)

File "/usr/lib/python3.7/site-packages/picard/formats/apev2.py", line 266, in _info

if file.filename.lower().endswith(".ofs"):

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