How to fix build error after moving react native app to new directory?

Question

I have a fresh react native app (0.64), initialized using react-native init.

All i did was move the root directory to a new location.

Lets say it was initialized in Desktop/Development/App/

then moved to Desktop/NewFolder/App

Now xcode (v12.4) build errors out with this:

2021-04-22 21:15:00.972 xcodebuild[49017:1689740] [MT] iPhoneConnect: 📱<DVTiOSDevice (0x7ffc4a1332c0), iPhone, iPhone, 14.0.1 (18A393), 00008020-001325581A88003A> == END: Underlying device preparation errors == ** BUILD FAILED **

The following build commands failed: PhaseScriptExecution [CP-User]\ Generate\ Specs /Users/me/Library/Developer/Xcode/DerivedData/TestRnMap-duuiecsbjoqdmcgvuyqbhriiigvg/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/FBReactNativeSpec.build/Script-BB599D7FFD9901F8410EF7B25FDA5742.sh (1 failure)

Ive tried:

• rm -rf ios/build
• deleting derived data
• restarting xcode
• react-native start --reset-cache

Answer 1

Try to delete the app from the simulator and re-install.