The error I encountered happened in a different scenario from yours, but I’m leaving it here to help anyone who might face similar issues in the future.
I’m using Windows 11 with WSL2 using Arch Linux (though, to be clear, this doesn’t depend on the distribution — it can be any distro).
I was getting this error every time I tried to run my Docker builder through the terminal, perform a prune, or initialize Docker, etc.
I searched everywhere for solutions until I finally understood and found the following:
There is a file called meta that is initialized for any file or environment inheritance via Docker.
It needs to contain a JSON with the following specifications:

meta.json

{
        "Name": "default",
        "Metadata": {
                "StackOrchestrator": "swarm"
        },
        "Endpoints": {
                "docker": {
                        "Host": "unix:///var/run/docker.sock",
                        "SkipTLSVerify": false
                }
        },
        "TLSMaterial": {}
}

this solved my problem, I no longer have the error
error: invalid character '\x00' looking for beginning of value
The file this here:

~/.docker/contexts/meta/fe9c6bd7a66301f49ca9b6a70b217107cd1284598bfc254700c989b916da791e/meta.json