"Encountered error while building for device."

[athilams]

I'm trying to build for iOS release, but I got this error, and couldn't find a solution anywhere. I couldn't even find some similar error.

Xcode build done. 4,3s Failed to build iOS app Error output from Xcode build: ↳ ** BUILD FAILED **

Xcode's output: ↳ /Users/Dev/Downloads/flutter/.pub-cache/hosted/pub.dartlang.org/speech_recognition-0.3.0+1/ios/Classes/SwiftSpeechRecognitionPlugin.swift:71:13: error: editor placeholder in source file <#fatalError()#> ^ Command CompileSwift failed with a nonzero exit code note: Using new build system note: Planning build note: Constructing build description

Encountered error while building for device.

[liemvo]

Can you try to set the swift language to 4.2?