You tried to open the .004 file directly instead of the .001 file. The Fix: Go back and right-click on shadowoftheerdtree.7z.001 .
A few important points:
It seems you’re asking for an article about a file named shadowoftheerdtree.7z.004 . However, this filename strongly indicates a (specifically part 4 of a split 7-Zip archive), not a standalone game, software title, or known cultural topic. shadowoftheerdtree.7z.004