[BUG] Cannot read properties of undefined (reading 'start')

[Rolv-Apneseth]

Describe the bug
First, thank you for making this.

As for the issue, while running linkspector check on a json file, I am getting the following error:

💥 Error: Cannot read properties of undefined (reading 'start')

To Reproduce
Running linkspector check with the following minimal json file causes it for me:

{
    "images": [
        "https://cdn.britannica.com/75/178475-050-E9212E3D/Pyramid-of-Khufu-Giza-Egypt.jpg"
    ]
}

The issue does not happen when I remove the array and just have "images": "..." directly.

Expected behavior
I would expect this to work, but a better error message to give a better idea of what the actual issue is, or at least a line number pointing to the offending link, would be nice too.

[ajdubovoy]

I'm also experiencing this in a totally normal Markdown file and I have absolutely no idea why. This is the most I get:

I'm really loving linkinspector otherwise. Thanks so much for your hard work on this!