dict ERROR , python 3.9.5

[BarnabyAlexandraBaron]

ERRO：[Encoding error] dictionary update sequence element #0 has length 1; 2 is required

Payload：python flask_session_cookie_manager3.py encode -s 'Imposs1bl3_Br0!_!H0uuD0uFXXXXXXXXX' -t '{"role":"admin"}'

python --version
Python 3.9.5

pip list is below
Package Version

---

blinker 1.7.0
click 8.1.7
colorama 0.4.6
flask 3.0.2
flask-session-cookie-manager 1.2.1.1
importlib-metadata 7.0.1
itsdangerous 2.1.2
jinja2 3.1.3
markupsafe 2.1.5
pip 21.1.1
setuptools 56.0.0
werkzeug 3.0.1
zipp 3.17.0

[BarnabyAlexandraBaron]

Using cmd , the erro occurs. However , using powershell can escape.

But needing payload changed , due to the malformed erro of ".

Powershell Payload:

python flask_session_cookie_manager3.py encode -s 'Imposs1bl3_Br0!_!H0uuD0uFXXXXXXXXX' -t '{\"role\":\"admin\"}'

[noraj]

➜ flask-session-cookie-manager3 encode -s 'Imposs1bl3_Br0!_!H0uuD0uFXXXXXXXXX' -t '{"role":"admin"}'                                 
eyJyb2xlIjoiYWRtaW4ifQ.ZcNCPw._ssOfesATGvOBC-XfffBdtRok3Q

➜ python --version                                                                                                                                                                    
Python 3.11.6

➜ pacman -Qi python-flask | grep Version
Version         : 2.3.3-1

➜ pacman -Qi python-itsdangerous | grep Version 
Version         : 2.1.2-3

As you said, it's only an issue of PowerShell string escaping.