Getting Invalid version exception during apt update

[probal basak]

 Hello Team,

I am getting the below exception while trying to issue apt update:
Getting this issue since last week. Previously the same thing used to work
perfectly fine.

Get:13 http://security.ubuntu.com/ubuntu focal-security/restricted amd64
> Packages [1385 kB]
> Fetched 17.1 MB in 5s (3617 kB/s)
> Reading package lists... Done
> Traceback (most recent call last):
>   File "/usr/local/bin/appimage-builder", line 8, in <module>
>     sys.exit(__main__())
>   File
> "/usr/local/lib/python3.8/dist-packages/appimagebuilder/__main__.py", line
> 58, in __main__
>     invoker.execute(commands)
>   File
> "/usr/local/lib/python3.8/dist-packages/appimagebuilder/invoker.py", line
> 41, in execute
>     command()
>   File
> "/usr/local/lib/python3.8/dist-packages/appimagebuilder/commands/apt_deploy.py",
> line 46, in __call__
>     deployed_packages = apt_deploy.deploy(
>   File
> "/usr/local/lib/python3.8/dist-packages/appimagebuilder/modules/deploy/apt/deploy.py",
> line 41, in deploy
>     self._prepare_apt_venv()
>   File
> "/usr/local/lib/python3.8/dist-packages/appimagebuilder/modules/deploy/apt/deploy.py",
> line 57, in _prepare_apt_venv
>     apt_core_packages = self._remove_old_packages(apt_core_packages)
>   File
> "/usr/local/lib/python3.8/dist-packages/appimagebuilder/modules/deploy/apt/deploy.py",
> line 113, in _remove_old_packages
>     if package > latest_packages[pkg_tuple]:
>   File
> "/usr/local/lib/python3.8/dist-packages/appimagebuilder/modules/deploy/apt/package.py",
> line 79, in __gt__
>     return version.parse(self.version) > version.parse(other.version)
>   File "/usr/local/lib/python3.8/dist-packages/packaging/version.py", line
> 52, in parse
>     return Version(version)
>   File "/usr/local/lib/python3.8/dist-packages/packaging/version.py", line
> 197, in __init__
>     raise InvalidVersion(f"Invalid version: '{version}'")
> packaging.version.InvalidVersion: Invalid version: '1.19.7ubuntu3'
>


Can you please help me to understand what the issue is about? And how to
resolve this issue please?

Thanks in advance.

-- 
Thanks,
Probal Basak.
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