Whitematteranalysis install on Ubuntu20.02 errors

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I am on Ubuntu 20.02 system and following the slicer DMRI tutorial , the White MatterAnalysis successfully built, but when I run >wm_quality_control_tractyography.py --help, I get errors;

Successfully built WhiteMatterAnalysis
(base) marie@marie-Precision-5820-Tower-X-Series:~$ wm_quality_control_tractography.py --help
Traceback (most recent call last):
File “/home/marie/anaconda3/lib/python3.7/site-packages/vtkmodules/vtkIOParallel.py”, line 5, in
from .vtkIOParallelPython import *
ImportError: libjsoncpp.so.19: cannot open shared object file: No such file or directory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File “/home/marie/anaconda3/bin/wm_quality_control_tractography.py”, line 4, in
import(‘pkg_resources’).run_script(‘WhiteMatterAnalysis==0.3.0’, ‘wm_quality_control_tractography.py’)
File “/home/marie/anaconda3/lib/python3.7/site-packages/pkg_resources/init.py”, line 667, in run_script
self.require(requires)[0].run_script(script_name, ns)
File “/home/marie/anaconda3/lib/python3.7/site-packages/pkg_resources/init.py”, line 1463, in run_script
exec(code, namespace, namespace)
File “/home/marie/anaconda3/lib/python3.7/site-packages/WhiteMatterAnalysis-0.3.0-py3.7-linux-x86_64.egg/EGG-INFO/scripts/wm_quality_control_tractography.py”, line 9, in
import vtk
File “/home/marie/anaconda3/lib/python3.7/site-packages/vtk.py”, line 32, in
all_spec.loader.exec_module(all_m)
File “/home/marie/anaconda3/lib/python3.7/site-packages/vtkmodules/all.py”, line 83, in
from .vtkIOParallel import *
File “/home/marie/anaconda3/lib/python3.7/site-packages/vtkmodules/vtkIOParallel.py”, line 9, in
from vtkIOParallelPython import *
ModuleNotFoundError: No module named ‘vtkIOParallelPython’

Any help would be appreciated.