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 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>
The option "terminal.integrated.shell.linux" is deprecated.

The new VSCode config is (mine is 1.62.3 on Ubuntu):

```
    "terminal.integrated.defaultProfile.linux": "zsh",
    "terminal.integrated.profiles.linux": {
        "zsh": {
            "path": "/usr/bin/zsh",
        }
    },

```

If only "terminal.integrated.defaultProfile." is set, it can not find zsh.