Error map
Homebrew Cask: It seems there is already an App at Homebrew: Error: It seems there is already an App at '/Applications/Chrome.app'
macOS · layer 6, Platform & cloud
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)
macOS: zsh: command not found: brew (Homebrew not on PATH on Apple Silicon)
Homebrew is installed in /opt/homebrew on Apple Silicon Macs, which isn’t on PATH until you add its shellenv line.
gyp: No Xcode or CLT version detected!
node-gyp on macOS can’t find the Xcode Command Line Tools to compile native modules.
macOS: xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance
A command needs the full Xcode app, but `xcode-select` points to the Command Line Tools only.
macOS: Error: EMFILE: too many open files, watch / ulimit: setrlimit failed: invalid argument
A process hit the low default per-process open-file limit on macOS (256 soft in shells), common with file watchers and big builds.
macOS: “app” can’t be opened because it is from an unidentified developer
Gatekeeper refuses to open an app that isn't signed with a registered Developer ID.
zsh: compinit: insecure directories, run compaudit for list. Ignore insecure directories and continue [y] or abort compinit [n]?
zsh refuses to load completions from directories owned by another user or writable by others.
macOS: dlopen: mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64')
A library or binary was built for a different CPU architecture than the process loading it.
macOS: Bootstrap failed: 5: Input/output error / launchctl load: Load failed: 5: Input/output error
launchd couldn't load a LaunchAgent/Daemon plist — it's invalid, already loaded, or has the wrong ownership/permissions.
ssh: /Users/me/.ssh/config: line 5: Bad configuration option: usekeychain
The `UseKeychain` option in `~/.ssh/config` is only understood by Apple's OpenSSH, not by a Homebrew/other OpenSSH.
Git: git: 'credential-osxkeychain' is not a git command. See 'git --help'
Git is configured to use the macOS keychain helper, but the helper binary isn't found by the Git you're running.
macOS: diskutil: Unmount of disk2s1 failed: at least one volume could not be unmounted / The disk wasn't ejected because one or more programs may be using it
macOS can't eject a drive because a process still has files open on it.
macOS: mkdir: /data: Read-only file system / touch: /usr/bin/x: Read-only file system
Since Catalina the system volume is read-only and sealed; you can't create directories at `/` or modify system folders.
Two steps away (35)
bash: command not found
The shell can’t find an executable with that name in any directory on your PATH.
OCI runtime create failed: exec: "x": executable file not found in $PATH
The command you asked the container to run doesn’t exist inside the image — wrong command name, a shell that isn’t installed (bas…
bash: /bin/rm: Argument list too long
A glob like * expanded to more file names than the kernel allows in one command (ARG_MAX), so the command never ran.
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.
npm ERR! cb() never called!
An old npm crash during install — usually network/cache corruption.
Error: Could not load the "sharp" module using the linux-x64 runtime
sharp’s native binary for this OS/CPU isn’t installed — usually node_modules installed on another platform (Mac → Linux/Docker).
Swift: No such module 'X' (module not found)
Xcode can’t find a Swift package, pod or framework you import.
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-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).
Too many open files (EMFILE)
The process hit its file-descriptor limit — sockets, files and pipes all count.
fork: retry: Resource temporarily unavailable (process/thread limit)
The user or container hit its maximum number of processes/threads (ulimit -u, pids cgroup), so new processes can’t be created.
Go: accept tcp [::]:8080: accept4: too many open files / open x: too many open files
The process reached its file-descriptor limit — usually leaked connections, files or response bodies.
macOS: “App” is damaged and can’t be opened. You should move it to the Trash.
Gatekeeper blocked an app that isn’t properly signed/notarized or was modified after download (quarantine attribute).
macOS: “app” cannot be opened because Apple cannot check it for malicious software / Apple could not verify “app” is free of malware that may harm your Mac
Gatekeeper blocked an app that is not notarized by Apple.
macOS (Apple Silicon): zsh: bad CPU type in executable: ./tool
You ran an Intel (x86_64) program on an Apple Silicon Mac without Rosetta 2 (or an arm64 binary on an Intel Mac).
Homebrew: Error: Permission denied @ dir_s_mkdir - /usr/local/Cellar / /opt/homebrew is not writable
Homebrew can't write to its prefix because the folders are owned by another user or root.
Homebrew: Error: No available formula with the name "x". Did you mean ...?
Homebrew can't find a formula or cask with that name in the taps it knows.
Homebrew: Error: Your Command Line Tools (CLT) are too outdated. Update them from Software Update / Please update to the latest macOS
Homebrew requires a newer Command Line Tools version than the one installed.
macOS: dyld[123]: Library not loaded: /usr/local/opt/openssl@1.1/lib/libssl.1.1.dylib — Reason: tried: ... (no such file)
A program needs a dynamic library that is missing or was moved/removed (often after a Homebrew upgrade).
macOS: dyld: Symbol not found: _SecTrustCopyCertificateChain — Expected in: /System/Library/Frameworks/Security.framework
A program was built for a newer macOS (or different library version) than the one running, so a function it needs isn't there.
macOS: Rosetta is not installed — softwareupdate --install-rosetta failed / Install Rosetta to open Intel apps
An Intel app (or Docker/Android emulator) needs Rosetta 2 but it's not installed on this Apple Silicon Mac.
Job for nginx.service failed because the control process exited with error code
systemd tried to start the service, but its start command failed. The real reason is in the service’s status/journal.
Failed to start x.service: Unit x.service not found
systemd has no unit with that name — the package isn’t installed, the name differs on this distro, or a new unit file wasn’t load…
systemd: Start request repeated too quickly / service hit its start limit
The service crashed and restarted several times in a short period, so systemd stopped trying (StartLimitBurst).
Git: Permission denied (publickey). fatal: Could not read from remote repository.
SSH authentication to GitHub/GitLab/Bitbucket failed — no key, wrong key, or the key isn’t added to your account.
Host key verification failed. fatal: Could not read from remote repository.
SSH doesn’t trust the server’s host key — first connection in a non-interactive environment, or the key changed.
ssh: connect to host github.com port 22: Connection timed out
Outbound SSH on port 22 is blocked (firewall, corporate or public Wi-Fi).
fatal: Authentication failed for 'https://github.com/x/y.git/'
HTTPS authentication to the Git host failed — wrong or expired credentials, or a password used where a token is required.
npm ERR! code 128 — An unknown git error occurred (git dependency install)
npm failed to fetch a dependency that points to a Git repository.
macOS: security: SecKeychainSearchCopyNext: The specified item could not be found in the keychain. (errSecItemNotFound -25300)
A lookup in the macOS keychain found no matching item, or access to it was denied.
macOS: hdiutil: create failed - Resource busy (or: hdiutil: couldn't eject "disk2" - Resource busy)
A disk image operation failed because the volume or a file in it is still in use (Finder, Spotlight, a terminal).
macOS: The Finder can't complete the operation because some data in "x" can't be read or written. (Error code -36)
Finder hit a read/write problem while copying — usually metadata files (`._*`, `.DS_Store`) on non-Mac file systems or a failing…
macOS: The operation can't be completed because one or more required items can't be found. (Error code -43)
Finder tried to act on an item that is gone, renamed, or an alias/symlink pointing nowhere.
macOS: Operation not permitted — Terminal/app lacks Full Disk Access (TCC privacy protection)
macOS privacy protection (TCC) blocked access to protected folders (Desktop, Documents, Downloads, Mail, Photos, external volumes…
macOS: rm: /usr/bin/python: Operation not permitted — even with sudo
System Integrity Protection blocks changes to protected system locations, even for root.
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