GNS3 is not working on parrot

[BharatG (Bharat)]

1. GNS3 is installed using the official repository.

/etc/apt/sources.list

#
# deb cdrom:[Debian GNU/Linux 4.6 _Parrot_ - Official Snapshot amd64 LIVE/INSTA$
#deb cdrom:[Debian GNU/Linux 4.6 _Parrot_ - Official Snapshot amd64 LIVE/INSTAL$

deb http://ppa.launchpad.net/gns3/ppa/ubuntu bionic main
deb-src http://ppa.launchpad.net/gns3/ppa/ubuntu bionic main
#deb http://ftp.us.debian.org/debian jessie main
#deb http://ftp.us.debian.org/debian stretch main
#deb http://deb.debian.org/debian unstable main
#deb http://deb.debian.org/debian stretch contrib
#deb http://deb.debian.org/debian stretch non-free

This system was installed using small removable media
(e.g. netinst, live or single CD). The matching “deb cdrom”

2. GNS3 is installed but not working showing following error.

$sudo gns3
Could not find platform independent libraries
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to [:<exec_prefix>]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ModuleNotFoundError: No module named ‘encodings’

Current thread 0x00007f94ec875740 (most recent call first):
Aborted

Operating System: Linux parrot 5.1.0-parrot1-3t-amd64 #1 SMP Parrot 5.1.3-1parrot1.3t (2019-05-20) x86_64 GNU/Linux
GNS3 Software Version: GNS3 V2.1.21

[Amzker (Amzker (rm -r /Brain))]

Well Your sources list not what need

Remove that all , add official parrot repo

https://parrotsec.org/docs