[Bug][Python] Fail to import CPG via Joern command line option

[UESuperGate]

Describe the bug
After saving and exiting the current Joern work context, a cpg.bin is generated under the project's work directory. However, I failed to get the cpg details using joern <path_to_cpg_bin> to reload the cpg file. Typing cpg to Joern's console reports error. This fails on Python but works fine on Java and C/C++.

To Reproduce

poc.py

# (c) 2012-2014, Michael DeHaan <[email protected]>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
__version__ = '1.6'
__author__ = 'Michael DeHaan'

Steps to reproduce the behavior:

1. Open the Joern's console via joern
2. Import the above poc.py to this work context via importCode("poc.py", "test")
3. Enter ctrl+d to save & exit in Ubuntu.
4. Import the saved cpg file via joern ./workspace/test/cpg.bin.
5. Type cpg.all.l and see error report.

Expected behavior
cpg.all.l will print out all the nodes in the cpg.

Screenshots

Desktop (please complete the following information):

• OS Ubuntu 22.04
• Joern Version 4.0.98
• Java version openJDK 17.0.11