Today I saw a strange error in my app, it is something like this
FileSystemException: FileSystemException: Getting current working directory failed, path = '' (OS Error: Too many open files in system, errno = 23)
My app has a huge number of assets, maybe it is the cause of this issue?
This feels like two separate issues. One is our holding of the package:test code on Mac and trying to drive too many tests at once
[✓] Flutter (Channel stable, 1.22.5, on Mac OS X 10.15.7 19H2 darwin-x64, locale en-GB) • Flutter version 1.22.5 at /Users/mac/Development/flutter • Framework revision 7891006299 (4 weeks ago), 2020-12-10 11:54:40 -0800 • Engine revision ae90085a84 • Dart version 2.10.4 [✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3) • Android SDK at /Users/mac/Library/Android/sdk • Platform android-30, build-tools 30.0.3 • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495) • All Android licenses accepted. [✓] Xcode - develop for iOS and macOS (Xcode 12.0) • Xcode at /Applications/Xcode.app/Contents/Developer • Xcode 12.0, Build version 12A7209 • CocoaPods version 1.10.0 [!] Android Studio (version 4.1) • Android Studio at /Applications/Android Studio.app/Contents ✗ Flutter plugin not installed; this adds Flutter specific functionality. ✗ Dart plugin not installed; this adds Dart specific functionality. • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495) [!] Connected device ! No devices available ! Doctor found issues in 2 categories.
How to Change Open Files Limit on macOS?
The default limit for Mac OS on how many files it can have open at a time is rather low. If you run into this limit, increase the number of available file handlers using the
ulimit -S -n 2048
If you use Travis or Cirrus for testing, increase the number of available file handlers that they can open by adding the same line to flutter/.travis.yml, or flutter/.cirrus.yml, respectively.
Answered By – Paresh Mangukiya
Answer Checked By – Marie Seifert (FlutterFixes Admin)