Question: After VScode installation, when I tried to open my integrated terminal window, each time I am getting error mentioned in the title.

I don't know what is the correct path to shell-executable. Before VSCode installation, the only change I done in terminal is I installed zsh in it.

System Details -

* OS: Ubuntu 20.04 LTS
* VSCode version: 1.53.2

Answer: 
I solved this issue by changing by default shell for vs-code with following steps:

1. Open settings-search in VSCode with `Cntr + Shift + p`
2. Search for `default`
3. clicked `Terminal: Select Default Shell`
4. clicked `zsh /usr/bin/zsh`, I selected zsh as I recently installed it and like to use it, you can use other terminal options as well.

Thank you.
I had the same issue. I resolved it by changing the path of "terminal.integrated.shell.linux" in the settings.json file.
Link : <https://code.visualstudio.com/docs/supporting/troubleshoot-terminal-launch>