Error map
version solving failed (pub get) Dart pub: Because app depends on intl ^0.19.0 and flutter_localizations from sdk depends on intl 0.18.1, version solving failed
Flutter / Dart · layer 1, On your device
Centre: this error. First ring: errors it is linked with (11). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.
Directly related (11)
CocoaPods could not find compatible versions for pod
pod install can’t satisfy the version constraints — outdated spec repo, a higher deployment target required, or two pods needing…
[!] Unable to find a specification for `X` depended upon by `Y`
CocoaPods can’t find the pod (or version) in its spec repos — stale local specs, a private spec repo not added, or a typo.
Swift: No such module 'X' (module not found)
Xcode can’t find a Swift package, pod or framework you import.
Flutter: BoxConstraints forces an infinite width. These invalid constraints were provided to RenderStack's layout() function (TextField in a Row)
A widget that needs a finite width, like a `TextField` or `Container` with no size, was placed where the parent offers unlimited…
Flutter (Android): java.io.IOException: Cleartext HTTP traffic to api.example.com not permitted
Android 9+ blocks plain `http://` requests by default; the app must use HTTPS or explicitly allow cleartext for that host.
Flutter iOS: Error running pod install — CocoaPods not installed or out of date / [!] CocoaPods could not find compatible versions for pod
The iOS build cannot install its native dependencies because CocoaPods is missing, outdated or a pod's version constraints confli…
Dart pub: The current Dart SDK version is 2.19.0. Because app requires SDK version >=3.0.0 <4.0.0, version solving failed
A package (or your own pubspec) requires a newer Dart SDK than the one your Flutter installation provides.
Android Gradle: Execution failed for task ':app:checkDebugAarMetadata'. Dependency requires libraries and applications that depend on it to compile against version 34 or later of the Android APIs
A dependency was built against a newer Android API than your project's `compileSdk`.
flutter doctor: Android license status unknown. Run `flutter doctor --android-licenses` to accept the SDK licenses
The Android SDK licenses have not been accepted, so builds cannot download or use SDK components.
Dart: Error: Couldn't resolve the package 'x' in 'package:x/x.dart'
Code imports a package that is not in `pubspec.yaml` or `pub get` has not been run since adding it.
Dart: The property 'length' can't be unconditionally accessed because the receiver can be 'null'
With null safety you used `.` on a nullable value; Dart requires a null check first.
Two steps away (31)
npm ERR! code ERESOLVE — unable to resolve dependency tree
npm 7+ found conflicting peer dependency requirements and refuses to install a broken tree.
Gradle: Could not resolve all files for configuration / Could not resolve dependency
Gradle couldn’t download a dependency — wrong coordinates/version, missing repository, offline mode, or network/proxy issues.
Xcode: Command PhaseScriptExecution failed with a nonzero exit code
A Run Script build phase (CocoaPods, React Native, Flutter, SwiftLint, Crashlytics…) failed. The real error is above this line in…
Dependency 'androidx.x:1.y' requires libraries and applications that depend on it to compile against version 34 or later of the Android APIs
A library needs a higher compileSdk than your module uses (checkAarMetadata task).
[!] CDN: trunk URL couldn't be downloaded: https://cdn.cocoapods.org/...
CocoaPods couldn’t reach its CDN spec repo — network/proxy issues, rate limiting, or an outdated CocoaPods.
ld: library not found for -lPods-AppName / framework not found Pods_App
The linker can’t find the CocoaPods library — usually because the .xcodeproj was opened instead of the .xcworkspace, or pods were…
Signing for "App" requires a development team. Select a development team in the Signing & Capabilities editor
No Apple developer team is selected for the target, so Xcode can’t sign the app.
Undefined symbol(s) for architecture arm64 — linker command failed with exit code 1
The linker can’t find the implementation of a symbol your code uses — a missing framework/library, a file not in the target, or a…
Xcode: Failed to prepare device for development / iPhone is not available. Please reconnect the device
Xcode couldn’t set up the device — usually the device’s iOS version is newer than Xcode supports, Developer Mode is off, or pairi…
Jetpack Compose: Vertically scrollable component was measured with an infinity maximum height constraints, which is disallowed
A LazyColumn (or verticalScroll) is placed inside another vertically scrolling container, so it gets infinite height.
Flutter: A RenderFlex overflowed by x pixels on the right/bottom
A Row or Column’s children need more space than available, so Flutter draws the yellow-black overflow stripes.
Flutter: RenderBox was not laid out: RenderFlex#a1b2c relayoutBoundary=up2 NEEDS-PAINT — Failed assertion: 'hasSize'
A widget was asked for its size or painted before layout finished, usually because a parent gave it unbounded or conflicting cons…
android.os.NetworkOnMainThreadException
The app made a network call on the main (UI) thread, which Android forbids.
Error Domain=NSURLErrorDomain Code=-1009 "The Internet connection appears to be offline."
URLSession couldn’t reach the network — the device is offline, the app’s cellular data is disabled, or the simulator lost network…
Error Domain=NSURLErrorDomain Code=-1001 "The request timed out."
The server didn’t respond within URLSession’s timeout (60 s default) — slow server, unreachable host on this network, or a stalle…
Xcode: Module 'firebase_core' not found — flutter build ios fails after adding a plugin
The iOS project cannot find a CocoaPods module, usually because Pods are missing, outdated, or the workspace was not used.
iOS: The resource could not be loaded because the App Transport Security policy requires the use of a secure connection (NSURLErrorDomain -1022)
iOS blocks plain HTTP connections by default unless the domain is allowed in `Info.plist`.
Xcode: No profiles for 'com.example.app' were found: Xcode couldn't find any iOS App Development provisioning profiles matching
Xcode could not sign the app because no provisioning profile or development team is set for the bundle identifier.
flutter doctor: Android SDK is missing command-line tools; download from https://goo.gl/XxQghQ — cmdline-tools component is missing
The Android SDK Command-line Tools package is not installed, so Flutter cannot run `sdkmanager` or accept licenses.
Manifest merger failed: android:exported needs to be explicitly specified
Targeting Android 12 (API 31)+ requires `android:exported` on every activity, service or receiver that has an intent-filter.
Duplicate class X found in modules A and B
Two dependencies ship the same class — typically old Android Support libraries mixed with AndroidX, or Kotlin stdlib-jdk7/jdk8 ve…
Gradle: Unsupported class file major version / Android Gradle plugin requires Java 17 to run
The JDK running Gradle doesn’t match what the Gradle version or Android Gradle Plugin (AGP) supports.
adb server version (41) doesn't match this client (39); killing...
Two different adb binaries are running — e.g. Android Studio’s SDK adb and another one on PATH (Homebrew, Genymotion, older SDK).
SDK location not found. Define a valid SDK location with an ANDROID_HOME environment variable or by setting the sdk.dir path in local.properties
Gradle doesn’t know where the Android SDK is installed.
IllegalStateException: Default FirebaseApp is not initialized in this process
Firebase couldn’t initialise because google-services.json or the Google Services Gradle plugin is missing/misapplied, or initiali…
Dart/Flutter: Null check operator used on a null value
The ! operator was applied to a variable that was null at runtime.
Dart: Bad state: No element — .first, .last or .single on an empty list
You called `.first`, `.last`, `.single` or `.reduce` on an empty collection.
Dart: RangeError (index): Invalid value: Valid value range is empty: 0
A list or string was indexed outside its bounds, often an empty list or an off-by-one in `itemBuilder`.
Dart: type 'Null' is not a subtype of type 'String' in type cast
A value that was `null` at runtime was cast or used as a non-nullable type, most often when parsing JSON.
Dart: LateInitializationError: Field 'controller' has not been initialized
A `late` variable was read before it was assigned.
Dart: Non-nullable instance field 'name' must be initialized. Try adding an initializer expression, or a generative constructor that initializes it, or mark it 'late'
With null safety every non-nullable field needs a value by the end of construction.
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