I made a deck in AnkiDroid 2.22.3, exported it to .apkg, imported it in Anki 2.1.15 (Linux), and got an import failure error:
Traceback (most recent call last):
File "/usr/share/anki/aqt/importing.py", line 339, in importFile
importer.run()
File "/usr/share/anki/anki/importing/apkg.py", line 32, in run
for k, v in list(json.loads(z.read("media").decode("utf8")).items()):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 1: invalid start byte