can´t store the mbid - `KeyError: 'mbid'`.

[heiner55]

The error means: There is no key "mbid" in track_data.
You can not trust data from the internet.
You have to check each key for existence.


Sample:

#!/usr/bin/python3

dd = { "a": "aa" }

print(dd["a"])
print(dd["x"])   # <==  KeyError 'x'