Advice on networking summer house at the end of my garden. - eviltoast

Hi all. I have a summer house at the end of my garden. A year or so ago, I ran cat 6 external to the summer house from my “core” but now all of a sudden it has died. Running the cable was a tough job, something I struggled with on my own as the only real path was along the fence line only partially buried.

What is the best solution to remedy this?

Wireless bridge, if so what brand

Or

Running a new cable