cannot install plugin in UBUNTU 20.04.3LTS

Hi,

hp-plugin cannot install plugin.This is what I am getting:

"
HP Linux Imaging and Printing System (ver. 3.21.8)
Plugin Download and Install Utility ver. 2.1

Copyright (c) 2001-18 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

Checking for network connection...
Downloading plug-in from:
Traceback (most recent call last):
  File "/usr/share/hplip/base/password.py", line 85, in get_distro_name
    os_name = platform.dist()[0]
AttributeError: module 'platform' has no attribute 'dist'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/share/hplip/ui5/plugindialog.py", line 248, in NextButton_clicked
    status, download_plugin_file, error_str = self.pluginObj.download(self.plugin_path,self.plugin_download_callback)
  File "/usr/share/hplip/installer/pluginhandler.py", line 257, in download
    core = core_install.CoreInstall()
  File "/usr/share/hplip/installer/core_install.py", line 241, in __init__
    self.passwordObj = password.Password(ui_mode)
  File "/usr/share/hplip/base/password.py", line 118, in __init__
    self.__readAuthType() # self.__authType
  File "/usr/share/hplip/base/password.py", line 141, in __readAuthType
    distro_name = get_distro_name().lower().replace(" ","")
  File "/usr/share/hplip/base/password.py", line 88, in get_distro_name
    os_name = distro.linux_distribution()[0]
  File "/usr/lib/python3/dist-packages/distro.py", line 122, in linux_distribution
    return _distro.linux_distribution(full_distribution_name)
  File "/usr/lib/python3/dist-packages/distro.py", line 677, in linux_distribution
    self.version(),
  File "/usr/lib/python3/dist-packages/distro.py", line 737, in version
    self.lsb_release_attr('release'),
  File "/usr/lib/python3/dist-packages/distro.py", line 899, in lsb_release_attr
    return self._lsb_release_info.get(attribute, '')
  File "/usr/lib/python3/dist-packages/distro.py", line 552, in __get__
    ret = obj.__dict__[self._fname] = self._f(obj)
  File "/usr/lib/python3/dist-packages/distro.py", line 1012, in _lsb_release_info
    stdout = subprocess.check_output(cmd, stderr=devnull)
  File "/usr/lib/python3.8/subprocess.py", line 415, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/lib/python3.8/subprocess.py", line 516, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 153, in apport_excepthook
    with os.fdopen(os.open(pr_filename,
PermissionError: [Errno 13] Permission denied: '/var/crash/_usr_share_hplip_plugin.py.1000.crash'

Original exception was:
Traceback (most recent call last):
  File "/usr/share/hplip/base/password.py", line 85, in get_distro_name
    os_name = platform.dist()[0]
AttributeError: module 'platform' has no attribute 'dist'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/share/hplip/ui5/plugindialog.py", line 248, in NextButton_clicked
    status, download_plugin_file, error_str = self.pluginObj.download(self.plugin_path,self.plugin_download_callback)
  File "/usr/share/hplip/installer/pluginhandler.py", line 257, in download
    core = core_install.CoreInstall()
  File "/usr/share/hplip/installer/core_install.py", line 241, in __init__
    self.passwordObj = password.Password(ui_mode)
  File "/usr/share/hplip/base/password.py", line 118, in __init__
    self.__readAuthType() # self.__authType
  File "/usr/share/hplip/base/password.py", line 141, in __readAuthType
    distro_name = get_distro_name().lower().replace(" ","")
  File "/usr/share/hplip/base/password.py", line 88, in get_distro_name
    os_name = distro.linux_distribution()[0]
  File "/usr/lib/python3/dist-packages/distro.py", line 122, in linux_distribution
    return _distro.linux_distribution(full_distribution_name)
  File "/usr/lib/python3/dist-packages/distro.py", line 677, in linux_distribution
    self.version(),
  File "/usr/lib/python3/dist-packages/distro.py", line 737, in version
    self.lsb_release_attr('release'),
  File "/usr/lib/python3/dist-packages/distro.py", line 899, in lsb_release_attr
    return self._lsb_release_info.get(attribute, '')
  File "/usr/lib/python3/dist-packages/distro.py", line 552, in __get__
    ret = obj.__dict__[self._fname] = self._f(obj)
  File "/usr/lib/python3/dist-packages/distro.py", line 1012, in _lsb_release_info
    stdout = subprocess.check_output(cmd, stderr=devnull)
  File "/usr/lib/python3.8/subprocess.py", line 415, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/lib/python3.8/subprocess.py", line 516, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.