Green Lines in dark blocks

There is nothing to see except a black area.

You can see gravel and stone blocks, but I have to agree, it's a dark photo. Maybe edit the photo and add brightness and contrast.

To the reporter, click on the screenshot and check if you see green lines. If so, it's an issue with your monitor or graphics card, as there is not a single bit of green in that image on my screen.

"Green Line" not found. Probably a computer issue, like Conor McS said.