u/HWM2666

So, this just happened. It’s a friend’s chair - subletting his place for a few months - so I haven’t been using this chair until the past few days. I sat in it this morning, leaned back, and the upper part of the chair popped and when I looked at it this is what I found (see photos). How does one go about getting this issue fixed?

Thanks ahead of time for any / all help.