Seems like there is a small error in a couple places actually:
Measure 29 does not sound like the right chord to me.
Sometimes I think the melody sounds too muddled with the accompany notes imo but thats just personal opinion. Take measure 8 for example, the underlying chord is em so notes could have been changed around to make the melody the highest sounding notes here. Just a thought.
Measure 18 has a wrong note in the melody here.
Overall, pretty good to me though!
As far as who wrote that version im not sure but the guitar parts are an exact copy of one that I have personally tabbed out. The thing that made me realize that they are my tabs is that the little change in playing the D chord in measure 11 and 20. Also, I remember that little weird change in measure 33 where I was not sure what notes were being played exactly here. Here is my (terrible) cover of this tune from youtube back before I had a real microphone as proof of my work back in 2013: https://www.youtube.com/watch?v=S_WtZkd0sak
Not sure who went and added more stuff to the arrangement though, as that was not me since the original only has 2 guitars in it. I thought about arranging this one for solo guitar (I do quite a few of these actually) but the range of the melody and accompany made it a bit more difficult than I was wanting to deal with so I decided not too. Interesting to hear a solo version of it though.