Error map
Looking up a deactivated widget's ancestor is unsafe Flutter: Looking up a deactivated widget's ancestor is unsafe. At this point the state of the widget's element tree is no longer stable
Flutter / Dart · layer 1, On your device
Centre: this error. First ring: errors it is linked with (12). 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 (12)
Flutter: setState() called after dispose(): _MyState#1a2b3 (lifecycle state: defunct, not mounted)
An async callback (network, timer, stream) finished after the widget was removed and then called setState.
TypeError: Failed to execute 'json' on 'Response': body stream already read
A fetch Response body was consumed twice (e.g. calling .text() then .json()).
SyntaxError: await is only valid in async functions and the top level bodies of modules
await was used inside a function that isn’t async (or in a classic, non-module script).
AbortError: The user aborted a request. / signal is aborted without reason
A fetch was cancelled through an AbortController (or the browser cancelled it).
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: Scaffold.of() called with a context that does not contain a Scaffold
You called `Scaffold.of(context)` (or `ScaffoldMessenger`) using the same `BuildContext` that created the Scaffold, which is abov…
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: setState() or markNeedsBuild() called during build. This widget cannot be marked as needing to build because the framework is already in the process of building widgets
State was changed while Flutter was building widgets, for example calling `setState` or a notifier from inside `build`.
Flutter: MediaQuery.of() called with a context that does not contain a MediaQuery
Code asked for screen size or theme data using a context that has no MediaQuery ancestor, usually above or outside `MaterialApp`.
Flutter: _HomeState#abc(ticker active) was disposed with an active Ticker. State.dispose() implementations must call dispose() on all their AnimationControllers
An `AnimationController` was still running when its `State` was disposed, because `dispose()` did not release it.
Flutter: dependOnInheritedWidgetOfExactType<_InheritedTheme>() or dependOnInheritedElement() was called before _HomeState.initState() completed
`Theme.of(context)`, `MediaQuery.of(context)` or `Provider.of(context)` was used in `initState`, where inherited widgets are not…
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.
Two steps away (32)
HTTP 409 Conflict
The request conflicts with the current state of the resource — e.g. a duplicate or an edit based on an outdated version.
Error: Too many re-renders. React limits the number of renders to prevent an infinite loop.
A state update runs during render, which triggers another render, which updates state again — forever.
Warning: A component is changing an uncontrolled input to be controlled
An input’s `value` started as `undefined` (uncontrolled) and later became a defined value (controlled), or vice versa.
Node.js: [UnhandledPromiseRejection] — This error originated either by throwing inside of an async function without a catch block
A promise rejected and nothing handled it; since Node 15 this crashes the process.
java.net.SocketException: Connection reset
The remote side closed the TCP connection abruptly while Java was reading or writing.
TypeError: Reduce of empty array with no initial value
Array.reduce() ran on an empty array without an initial value.
IndentationError: unexpected indent / expected an indented block
Python’s block structure is broken — inconsistent indentation or mixed tabs and spaces.
SyntaxError: Unexpected token '<' (HTML served instead of JavaScript)
The browser loaded a .js file but received HTML (an error page or the SPA index.html).
SyntaxError: Unexpected end of input
The parser reached the end of the code (or JSON) while still expecting more — a missing } ) ] or empty JSON.
TypeError: Failed to fetch / NetworkError when attempting to fetch resource
The browser couldn’t complete the request at the network level — CORS, DNS, offline, blocked mixed content, or the server refused…
RangeError: Invalid array length
An array was created or resized with a negative, fractional or enormous length.
URIError: URI malformed
decodeURIComponent/decodeURI received an invalid percent-encoded sequence.
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…
Flutter: No Material widget found. TextField widgets require a Material widget ancestor
A Material-design widget (TextField, ListTile, InkWell, Chip) was placed outside a `Scaffold`, `Material` or `Card`, so it has no…
Flutter: Navigator operation requested with a context that does not include a Navigator
`Navigator.push/pop` was called with a context above the `MaterialApp`, so no Navigator exists in the lookup path.
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.
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…
TypeError: Cannot assign to read only property 'x' of object
Code tried to modify a frozen object, a getter-only property, or immutable state.
android.os.TransactionTooLargeException: data parcel size x bytes
Too much data was put into a Bundle/Intent/saved state, exceeding the ~1 MB Binder transaction buffer.
SwiftUI: Modifying state during view update, this will cause undefined behavior
A @State/@Published value was changed while SwiftUI was computing a view’s body.
Flutter: Error: Could not find the correct Provider<CartModel> above this Consumer<CartModel> Widget
A widget asked Provider for an object that is not above it in the widget tree.
Flutter test: Expected: exactly one matching candidate Actual: _TextFinder:<Found 0 widgets with text "Hello">
A widget test looked for a widget that is not currently in the tree.
WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running?
A dialog or popup was shown with a context whose Activity is finishing/destroyed, or with the Application context.
IllegalStateException: Can not perform this action after onSaveInstanceState (fragment transaction)
A FragmentTransaction (or DialogFragment.show/navigation) ran after the Activity saved its state, typically from an async callbac…
IllegalStateException: Fragment x not attached to a context / not attached to an activity
Code called requireContext()/requireActivity()/getString() after the Fragment was detached — usually in an async callback.
flutter run: No connected devices found; check 'flutter doctor'. Expected at least one device
Flutter cannot see any emulator, simulator, browser or phone to run on.
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…
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