Flutter IOS Build: PhaseScriptExecution Thin\ Binary Build Command Failing

Question

I have a flutter app that I'm porting to ios. After running flutter build ios -v, the process succesfully sets up, installs dependencies, and compiles, but something goes wrong during the build phases.

/Users/liamhp/Library/Developer/Xcode/DerivedData/Runner-aqpqbhigkgvvwqexwsikncfsedsl/Build/Interme diates.noindex/Runner.build/Release-iphoneos/Runner.build/Script-3B06AD1E1E4923F5004D2608.sh Unhandled exception: Null check operator used on a null value ... Result bundle written to path: /var/folders/51/2ypxj09x2tq8m09320t8ghlm0000gn/T/flutter_tools.pEfCUq/flutter_ios_build_temp_dirRNfKNo/temporary_xcresult_bundle The following build commands failed: PhaseScriptExecution Thin\ Binary /Users/liamhp/Library/Developer/Xcode/DerivedData/Runner-aqpqbhigkgvvwqexwsikncfsedsl/Build/Intermedia tes.noindex/Runner.build/Release-iphoneos/Runner.build/Script-3B06AD1E1E4923F5004D2608.sh (in target 'Runner' from project 'Runner') (1 failure) [+110053 ms] └─Compiling, linking and signing... (completed in 131.2s) [ ] Xcode build done. 1464.1s [ +16 ms] executing: xcrun xcresulttool get --path /var/folders/51/2ypxj09x2tq8m09320t8ghlm0000gn/T/flutter_tools.pEfCUq/flutter_ios_build_temp_dirRNfKNo/temporary_xcresult_bundl e --format json { ...(build results dict) ... ... ... "metrics" : { "_type" : { "_name" : "ResultMetrics" }, "errorCount" : { "_type" : { "_name" : "Int" }, "_value" : "1" }, "warningCount" : { "_type" : { "_name" : "Int" }, "_value" : "23" } } } } [ +48 ms] Failed to build iOS app 

I tried to look at the generated /var/folders/51/2ypxj09x2tq8m09320t8ghlm0000gn/T/flutter_tools.pEfCUq/flutter_ios_build_temp_dirRNfKNo/temporary_xcresult_bundle file, but the flutter_tools.pEfCUq folder is empty.

Looking for some insight on how best to debug this. Where should I look to figure out what's actually going wrong here?

Answer 1

try to do flutter clean Also I recommend to reinstal pods

sh script:

flutter clean cd ios/ pod deintegrate pod cache clean --all rm -rf Pods rm Podfile.lock cd .. flutter pub get cd ios pod install --repo-update cd .. 

Answer 2

My guess is that the error was in some sort of file corruption- I recloned the repo and it's fine now.