Xcode 9.4 : unexpected service error: The Xcode build system has crashed

ios11 build-error swift4.1 xcode-workspace xcode9.4
Jayprakash Dubey picture Jayprakash Dubey · Jun 15, 2018 · Viewed 13.7k times · Source

I’m getting strange error while building project in Xcode 9.4

Build system information - unexpected service error: The Xcode build system has crashed. Please close and reopen your workspace.

Screenshot attached

I tried Xcode quit and reopen but that didn’t worked. Any solution?

Answer

Hrishikesh Devhare picture Hrishikesh Devhare · Jun 20, 2018

Please clear derived data folder (located at ~/Library/Developer/Xcode/DerivedData) and restart the Xcode project.

Related questions

Fixing Xcode 9 issue: "iPhone is busy: Preparing debugger support for iPhone"

I'm looking for more information on the message below. Xcode 9 seems to be hanging for a couple minutes already... How can I tell Xcode 9 to quickly recognize my previously used device updated to iOS 11? .Alex’s iPhone is busy: Preparing …

Read More
Safe Area of Xcode 9

While exploring Xcode9 Beta Found Safe Area on Interface builders View hierarchy viewer. Got curious and tried to know about Safe Area on Apples documentation, in gist the doc says "The the view area which directly interacts with Auto layout" …

Read More
How do you perform wireless debugging in Xcode 9 with iOS 11, Apple TV 4K, etc?

Wireless debugging was recently added as a feature in Xcode 9, iOS 11, and tvOS 11. Apple TV 4K doesn't have a USB port, so it requires wireless debugging. How do you perform this wireless debugging in Xcode?

Read More