Error map
ImportError ImportError: cannot import name 'x' from 'y'
Python · layer 4, Application & API
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)
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…
ModuleNotFoundError: No module named 'distutils'
Python 3.12 removed distutils; old packages or tools that import it fail.
AttributeError: 'X' object has no attribute 'y'
You accessed an attribute or method that doesn’t exist on that object type.
[ERROR] Failed to execute goal on project x: Could not resolve dependencies for project
Maven couldn’t download or find one or more dependencies.
ERROR: Could not find a version that satisfies the requirement x (from versions: none)
pip found no installable version of the package for your Python version, OS or index.
0x8007007E: The specified module could not be found
A DLL that a program, driver or COM component needs isn’t on disk or on the DLL search path.
error NU1101: Unable to find package X. No packages exist with this id in source(s): nuget.org
NuGet restore can’t find the package in any configured source — typo, private feed not configured/authenticated, or nuget.org mis…
error NU1605: Detected package downgrade: X from 8.0.1 to 8.0.0. Reference the package directly from the project to select a different version
A direct reference requests a lower version than a dependency needs, and NuGet treats the downgrade as an error.
Go: declared and not used: x / "fmt" imported and not used
Go refuses to compile code with unused local variables or unused imports.
Runtime.ImportModuleError: Unable to import module 'lambda_function': No module named 'x'
Lambda couldn’t load your handler file or one of its dependencies — the package is missing from the deployment zip/layer or the h…
Unmet dependencies / E: Unable to correct problems, you have held broken packages
apt can’t find a set of package versions that satisfies all dependencies — usually mixed repositories or a package from another r…
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).
Two steps away (35)
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.
PHP Fatal error: Uncaught Error: Class "X" not found
PHP couldn’t load the class — autoloading failed, the namespace is wrong, or the dependency isn’t installed.
NameError: name 'x' is not defined
Python doesn’t know the name — it was never assigned/imported in this scope, or it’s misspelled.
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.
gyp ERR! build error / node-gyp rebuild failed
A dependency with native C/C++ code couldn’t compile — missing build tools, Python, or an unsupported Node version.
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: x is not a function
You called something as a function, but its value is not a function (it’s undefined, a string, an object…).
KeyError: 'x'
You accessed a dictionary key that doesn’t exist.
TypeError: 'NoneType' object is not subscriptable
You used `[ ]` on a value that is `None` — typically a function that returned nothing.
java.lang.ClassNotFoundException / NoClassDefFoundError
The JVM couldn’t find a class on the classpath at runtime.
npm ERR! code E404 — 404 Not Found: package@version is not in this registry
npm asked the registry for a package (or version) that doesn’t exist there — a typo, a private/scoped package without auth, or th…
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…
error: externally-managed-environment
Your system Python (Debian 12+, Ubuntu 23.04+, Homebrew) refuses pip installs into the OS-managed environment (PEP 668).
error: subprocess-exited-with-error / Failed building wheel for x
pip had to compile a package from source and the build failed — missing compiler, headers or system libraries.
npm ERR! code ERESOLVE — unable to resolve dependency tree
npm 7+ found conflicting peer dependency requirements and refuses to install a broken tree.
The application was unable to start correctly (0xc000007b)
A program loaded a DLL of the wrong architecture (32-bit vs 64-bit) or a corrupted runtime library.
VCRUNTIME140.dll was not found / MSVCP140.dll is missing
The program needs the Microsoft Visual C++ 2015–2022 Redistributable, which isn’t installed (or is damaged).
java.lang.NoSuchMethodError
Code compiled against one version of a library is running with another version where the method doesn’t exist.
Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './x' is not defined by "exports"
You imported a deep path inside a package that its package.json "exports" field doesn’t expose.
npm WARN EBADENGINE Unsupported engine / The engine "node" is incompatible with this module
A package requires a different Node.js version than the one you’re running.
Could not load file or assembly 'X, Version=…' or one of its dependencies
The runtime couldn’t find or load a referenced DLL — missing from the output, wrong version, or wrong platform (x86/x64).
DeprecationWarning: The `punycode` module is deprecated (DEP0040)
A dependency imports Node’s built-in punycode module, deprecated since Node 21.
npm ERR! code ETARGET — No matching version found for package@^9.9.9
The version range in package.json doesn’t match any published version of the package.
TypeError: x is not a constructor
new was used with something that isn’t a class/constructor — usually a wrong import.
ReferenceError: Cannot access 'x' before initialization
A let/const/class was used before its declaration line ran (temporal dead zone) — often a circular import.
MySQL ERROR 1046 (3D000): No database selected
A query referenced tables without a database selected (no USE and no db in the connection).
Error: Node Sass does not yet support your current environment
node-sass (deprecated) has no binary for your Node version/OS.
npm WARN deprecated package@1.2.3: This package is no longer supported.
A dependency (often a transitive one) is deprecated by its author.
npm ERR! code EOVERRIDE — Override for x conflicts with direct dependency
An "overrides" entry sets a different version for a package you also depend on directly.
E: Could not get lock /var/lib/dpkg/lock-frontend — is another process using it?
apt can’t run because another package operation (often automatic updates) holds the dpkg lock.
sh: vite: command not found (npm script)
A tool used in an npm script isn’t installed in node_modules/.bin.
npm ERR! code EBADPLATFORM — notsup Unsupported platform for fsevents: wanted {"os":"darwin"} (current: {"os":"linux"})
A package restricted to certain OS/CPU was installed as a required (not optional) dependency on another platform.
npm ERR! code 128 — An unknown git error occurred (git dependency install)
npm failed to fetch a dependency that points to a Git repository.
npm ERR! code ELSPROBLEMS — invalid / extraneous / missing packages in npm ls
npm ls found the installed tree doesn’t match package.json and the lockfile.
Your requirements could not be resolved to an installable set of packages.
Composer can’t find package versions that satisfy every constraint (PHP version, extensions, other packages).
Map another error
Popular: 4035004000xC000007BTypeErrorCritical error404NullPointerException