Can not execute the command to set a theme.

[Abhranta]

I am using ubuntu18.04 . When I try to execute the command- jt -t I get the following errors :

Traceback (most recent call last):
File "/home/abhrant/python/deep_learning/lib/python3.6/site-packages/jupyterthemes/stylefx.py", line 459, in reset_default
delete_font_files()
File "/home/abhrant/python/deep_learning/lib/python3.6/site-packages/jupyterthemes/stylefx.py", line 104, in delete_font_files
for fontfile in os.listdir(jupyter_custom_fonts):
FileNotFoundError: [Errno 2] No such file or directory: '/home/abhrant/.jupyter/custom/fonts'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/abhrant/python/deep_learning/bin/jt", line 8, in
sys.exit(main())
File "/home/abhrant/python/deep_learning/lib/python3.6/site-packages/jupyterthemes/init.py", line 314, in main
dfonts=args.defaultfonts)
File "/home/abhrant/python/deep_learning/lib/python3.6/site-packages/jupyterthemes/init.py", line 59, in install_theme
stylefx.reset_default(False)
File "/home/abhrant/python/deep_learning/lib/python3.6/site-packages/jupyterthemes/stylefx.py", line 461, in reset_default
check_directories()
File "/home/abhrant/python/deep_learning/lib/python3.6/site-packages/jupyterthemes/stylefx.py", line 60, in check_directories
os.makedirs(jupyter_custom)
File "/usr/lib/python3.6/os.py", line 220, in makedirs
mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: '/home/abhrant/.jupyter/custom'