Linux unable to install

[Ygarr]

"./install.sh
./install.sh: 9: source: not found
Testing environment
Cat Printer
Finished
"
Arch-based distro

[LeloupArnaud]

I had the same error but then I used venv — Creation of virtual environments

python3 -m venv my-venv
my-venv/bin/python server.py

My server is working but I am not able to print