Error map

Unable to find a specification [!] Unable to find a specification for `X` depended upon by `Y`

iOS · layer 1, On your device

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Centre: this error. First ring: errors it is linked with (7). 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.

1 · On your device 2 · Network 4 · Application & API 6 · Platform & cloud 7 · Build & delivery
Unable to find a specification — [!] Unable to find a specification for `X` depended upon by `Y` (iOS)Unable to f…Could not resolve — Gradle: Could not resolve all files for configuration / Could not resolve dependency (Android)Could not resolvePhaseScriptExecution — Xcode: Command PhaseScriptExecution failed with a nonzero exit code (iOS)PhaseScriptExecutionCocoaPods compatible versions — CocoaPods could not find compatible versions for pod (iOS)CocoaPods compatibl…Dependency requires compileSdk — Dependency 'androidx.x:1.y' requires libraries and applications that depend on it to compile against version 34 or later of the Android APIs (Android)Dependency requires…CDN: trunk URL couldn't be downloaded — [!] CDN: trunk URL couldn't be downloaded: https://cdn.cocoapods.org/... (iOS)CDN: trunk URL coul…library not found for -lPods — ld: library not found for -lPods-AppName / framework not found Pods_App (iOS)library not found f…No such module — Swift: No such module 'X' (module not found) (iOS)No such moduleINSTALL_FAILED_UPDATE_INCOMPATIBLE — Android: INSTALL_FAILED_UPDATE_INCOMPATIBLE (Android)INSTALL_FAILED_UPDA…ClassNotFoundException — java.lang.ClassNotFoundException / NoClassDefFoundError (Java)ClassNotFoundExcept…Manifest merger failed — Manifest merger failed: android:exported needs to be explicitly specified (Android)Manifest merger fai…command not found — bash: command not found (Linux)command not foundNo signing certificate — Xcode: No signing certificate "iOS Development" found (iOS)No signing certific…Multiple commands produce — Xcode: Multiple commands produce '…/Info.plist' (or another file) (iOS)Multiple commands p…ERESOLVE — npm ERR! code ERESOLVE — unable to resolve dependency tree (npm)ERESOLVENoSuchMethodError — java.lang.NoSuchMethodError (Java)NoSuchMethodErrorMaven resolve — [ERROR] Failed to execute goal on project x: Could not resolve dependencies for project (Java)Maven resolveMODULE_NOT_FOUND — Error: Cannot find module 'x' (MODULE_NOT_FOUND) (Node.js)MODULE_NOT_FOUNDModuleNotFoundError — ModuleNotFoundError: No module named 'x' (Python)ModuleNotFoundErrorImportError — ImportError: cannot import name 'x' from 'y' (Python)ImportErrorECONNREFUSED — Error: connect ECONNREFUSED 127.0.0.1:5432 (Node.js)ECONNREFUSED407 — HTTP 407 Proxy Authentication Required (HTTP)407408 — HTTP 408 Request Timeout (HTTP)408Undefined symbols for architecture — Undefined symbol(s) for architecture arm64 — linker command failed with exit code 1 (iOS)Undefined symbols f…built for iOS, linking for simulator — Building for iOS Simulator, but linking in object file built for iOS, for architecture arm64 (iOS)built for iOS, link…undefined reference to — C/C++: undefined reference to `function' — collect2: error: ld returned 1 exit status (C/C++)undefined reference…Signing requires a development team — Signing for "App" requires a development team. Select a development team in the Signing & Capabilities editor (iOS)Signing requires a …Failed to prepare device for development — Xcode: Failed to prepare device for development / iPhone is not available. Please reconnect the device (iOS)Failed to prepare d…ITMS-90725 — ITMS-90725: SDK version issue — This app was built with the iOS 17.x SDK. All iOS apps submitted to the App Store must be built with the iOS 18 SDK or later (iOS)ITMS-90725

Directly related (7)

Could not resolveAndroid

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.

PhaseScriptExecutioniOS

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…

CocoaPods compatible versionsiOS

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…

Dependency requires compileSdkAndroid

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 downloadediOS

[!] 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.

library not found for -lPodsiOS

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…

No such moduleiOS

Swift: No such module 'X' (module not found)

Xcode can’t find a Swift package, pod or framework you import.

Two steps away (21)

INSTALL_FAILED_UPDATE_INCOMPATIBLEAndroid

Android: INSTALL_FAILED_UPDATE_INCOMPATIBLE

An app with the same package name but a different signing key is already installed on the device.

ClassNotFoundExceptionJava

java.lang.ClassNotFoundException / NoClassDefFoundError

The JVM couldn’t find a class on the classpath at runtime.

Manifest merger failedAndroid

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.

command not foundLinux

bash: command not found

The shell can’t find an executable with that name in any directory on your PATH.

No signing certificateiOS

Xcode: No signing certificate "iOS Development" found

Xcode can’t find a valid code-signing certificate + private key for the selected team in your keychain.

Multiple commands produceiOS

Xcode: Multiple commands produce '…/Info.plist' (or another file)

Two build steps write the same output file — usually Info.plist or an asset added to “Copy Bundle Resources”, or duplicate files…

ERESOLVEnpm

npm ERR! code ERESOLVE — unable to resolve dependency tree

npm 7+ found conflicting peer dependency requirements and refuses to install a broken tree.

NoSuchMethodErrorJava

java.lang.NoSuchMethodError

Code compiled against one version of a library is running with another version where the method doesn’t exist.

Maven resolveJava

[ERROR] Failed to execute goal on project x: Could not resolve dependencies for project

Maven couldn’t download or find one or more dependencies.

MODULE_NOT_FOUNDNode.js

Error: Cannot find module 'x' (MODULE_NOT_FOUND)

Node can’t resolve the module path — the package isn’t installed, or a relative path/extension is wrong.

ModuleNotFoundErrorPython

ModuleNotFoundError: No module named 'x'

Python can’t find the module you import — it isn’t installed in the interpreter/virtualenv that’s running, or the import path is…

ImportErrorPython

ImportError: cannot import name 'x' from 'y'

The module was found, but the name you’re importing from it doesn’t exist — usually a version change or a circular import.

ECONNREFUSEDNode.js

Error: connect ECONNREFUSED 127.0.0.1:5432

Nothing is listening at that host:port — the target service is down or you’re connecting to the wrong address.

407HTTP

HTTP 407 Proxy Authentication Required

A proxy between you and the server requires credentials before it will forward your request.

408HTTP

HTTP 408 Request Timeout

The server closed the connection because the client took too long to send the complete request.

Undefined symbols for architectureiOS

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…

built for iOS, linking for simulatoriOS

Building for iOS Simulator, but linking in object file built for iOS, for architecture arm64

A library contains device-only arm64 code; Apple Silicon simulators also run arm64 and need a separate simulator slice.

undefined reference toC/C++

C/C++: undefined reference to `function' — collect2: error: ld returned 1 exit status

The linker can’t find the definition of a function or variable that was declared and used.

Signing requires a development teamiOS

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.

Failed to prepare device for developmentiOS

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…

ITMS-90725iOS

ITMS-90725: SDK version issue — This app was built with the iOS 17.x SDK. All iOS apps submitted to the App Store must be built with the iOS 18 SDK or later

App Store Connect requires uploads to be built with a recent Xcode/iOS SDK (raised every spring).

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