indicator-cpufreq shows error while loading

[Pranaykumar Tirpude]

I have installed indicator-cpufreq and It is not starting and shows error while starting it. I am using following system.
OS: Ubuntu 20.04 LTS x86_64
Host: 81MV Lenovo IdeaPad S145-15IWL
Kernel: 5.4.0-40-generic
Shell: bash 5.0.16
KDE Plasma Version- 5.18.5
Qt Version- 5.12.8

and when I run indicator-cpufreq in terminal I get following error.

/usr/lib/python3/dist-packages/indicator_cpufreq/indicator.py:20: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk
/usr/lib/python3/dist-packages/indicator_cpufreq/indicator.py:21: PyGIWarning: AppIndicator3 was imported without specifying a version first. Use gi.require_version('AppIndicator3', '0.1') before import to ensure that the right version gets loaded.
  from gi.repository import AppIndicator3 as appindicator
Traceback (most recent call last):
  File "/usr/bin/indicator-cpufreq", line 77, in <module>
    from indicator_cpufreq.indicator import MyIndicator
  File "/usr/lib/python3/dist-packages/indicator_cpufreq/indicator.py", line 26, in <module>
    from indicator_cpufreq import cpufreq
  File "/usr/lib/python3/dist-packages/indicator_cpufreq/cpufreq.py", line 59, in <module>
    _libcpufreq.cpufreq_cpu_exists.argtypes = [c_uint]
  File "/usr/lib/python3.8/ctypes/__init__.py", line 386, in __getattr__
    func = self.__getitem__(name)
  File "/usr/lib/python3.8/ctypes/__init__.py", line 391, in __getitem__
    func = self._FuncPtr((name_or_ordinal, self))
AttributeError: /usr/bin/python3: undefined symbol: cpufreq_cpu_exists