command-not-found cannot access database

[Gerald Jansen]

command-not-found version: 0.3
Python version: 3.7.3 final 0
Distributor ID: Ubuntu
Description: Ubuntu 19.04
Release: 19.04
Codename: disco
Exception information:

unable to open database file
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 23, in crash_guard
    callback()
  File "/usr/lib/command-not-found", line 89, in main
    cnf = CommandNotFound.CommandNotFound(options.data_dir)
  File "/usr/lib/python3/dist-packages/CommandNotFound/CommandNotFound.py", line 81, in __init__
    self.db = SqliteDatabase(dbpath)
  File "/usr/lib/python3/dist-packages/CommandNotFound/db/db.py", line 12, in __init__
    self.con = sqlite3.connect(filename)
sqlite3.OperationalError: unable to open database file

$ ls -l /var/lib/command-not-found
-rw-r----- 1 root root 3256320 May 1 11:05 commands.db
-rw-r----- 1 root root 1602 May 1 11:05 commands.db.metadata

Even after fixing the permissions, they revert after every aptitude update.

[eric gundrum (ericgundrum)]

Likely a duplicate of https://bugs.launchpad.net/command-not-found/+bug/1824000