Xcode 13.4.1 error: unable to attach DB: error: accessing build database (react native)

Question

**error** Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65. To debug build logs further, consider building your app with Xcode.app, by opening app.xcworkspace.

**error**: unable to attach DB: error: accessing build database "/Users/user/Library/Developer/Xcode/DerivedData/app-cdawdoxdzwfdgueqnyshuhonxndw/Build/Intermediates.noindex/XCBuildData/build.db": database is locked Possibly there are two concurrent builds running in the same filesystem location.

tried almost everything build cleans, reinstalling pods etc

react native version: 0.67.3 Xcode version: 13.4.1

Answer 1

After almost one day of debugging this issue, came to know about this article which solves the problem for me, although article has more than one steps but I just tried the last one and it worked, mentioning the steps below,

rm -rf ~/Library/Developer/Xcode/DerivedData/
cd ios
pod deintegrate
pod update
cd..
yarn run ios or npm run ios

Answer 2

I only did the "rm -rf ~/Library/Developer/Xcode/DerivedData/" and it fixed it for me.