the prerequisites list
Node 4.3 - while the current version is 8.12 also MongoDB version 2.6.X, 3.0.X or 3.2.X is listed while latest version is 4.0
You are probably looking at an old version. parse-server is under very active development. The current version (3.0.0) needs Node >= 8 and MongoDB support is at least v3.4.13.