Why does leapp preupgrade fail with `sqlite3.OperationalError: unable to open database file` traceback error ?

Issue

• leapp preupgrade command fails with below traceback error when upgrading from RHEL 7 to RHEL 8 :

  # leapp preupgrade
  Traceback (most recent call last):
   File "/usr/bin/leapp", line 9, in <module>
     load_entry_point('leapp==0.12.1', 'console_scripts', 'leapp')()
   File "/usr/lib/python2.7/site-packages/leapp/cli/__init__.py", line 18, in main
     cli.command.execute('leapp version {}'.format(VERSION))
   File "/usr/lib/python2.7/site-packages/leapp/utils/clicmd.py", line 105, in execute
     args.func(args)
   File "/usr/lib/python2.7/site-packages/leapp/utils/clicmd.py", line 127, in called
     self.target(args)
   File "/usr/lib/python2.7/site-packages/leapp/cli/upgrade/__init__.py", line 352, in preupgrade
     e.store()
   File "/usr/lib/python2.7/site-packages/leapp/utils/audit/__init__.py", line 79, in store
     self.do_store(connection)
   File "/usr/lib/python2.7/site-packages/leapp/utils/audit/__init__.py", line 126, in do_store
     (self.context, self.configuration, self.stamp, self.kind))
  sqlite3.OperationalError: unable to open database file
  

• leapp preupgrade command fails with below traceback error when upgrading from RHEL 8 to RHEL 9 :

  Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/leapp/repository/actor_definition.py", line 74, in _do_run
  File "/usr/lib/python3.6/site-packages/leapp/actors/__init__.py", line 289, in run
  File "/etc/leapp/repos.d/system_upgrade/common/actors/targetuserspacecreator/actor.py", line 58, in process
  File "/usr/lib/python3.6/site-packages/leapp/utils/deprecation.py", line 42, in process_wrapper
  File "/etc/leapp/repos.d/system_upgrade/common/actors/targetuserspacecreator/libraries/userspacegen.py", line 256, in perform
  File "/usr/lib64/python3.6/contextlib.py", line 99, in __exit__
  File "/etc/leapp/repos.d/system_upgrade/common/libraries/overlaygen.py", line 593, in create_source_overlay
  File "/etc/leapp/repos.d/system_upgrade/common/libraries/overlaygen.py", line 326, in cleanup_scratch
  File "/usr/lib64/python3.6/logging/__init__.py", line 1296, in debug
  File "/usr/lib64/python3.6/logging/__init__.py", line 1444, in _log
  File "/usr/lib64/python3.6/logging/__init__.py", line 1454, in handle
  File "/usr/lib64/python3.6/logging/__init__.py", line 1516, in callHandlers
  File "/usr/lib64/python3.6/logging/__init__.py", line 865, in handle
  File "/usr/lib/python3.6/site-packages/leapp/logger/__init__.py", line 40, in emit
  File "/usr/lib/python3.6/site-packages/leapp/logger/__init__.py", line 45, in _do_emit
  File "/usr/lib/python3.6/site-packages/leapp/utils/audit/__init__.py", line 87, in store
  File "/usr/lib/python3.6/site-packages/leapp/utils/audit/__init__.py", line 73, in get_connection
  File "/usr/lib/python3.6/site-packages/leapp/cli/commands/upgrade/util.py", line 26, in wrapper
  File "/usr/lib/python3.6/site-packages/leapp/utils/audit/__init__.py", line 60, in create_connection
  sqlite3.OperationalError: unable to open database file