I recently upgraded to new beta version of macOS 10.14 but after installing it when I tried to open my older version of Xcode 8.3.2, every time it gets crashed. Below is its
Xcode 8.X.X is doesn't support on macos 10.12 later version.
Cause of issue: "DYLD, [0x4] Symbol missing"
and also doesn't meet the swift version. so you need to upgrade your Xcode version or downgrade your os version below 10.12