Error map
The installer encountered an error that caused the installation to fail macOS: The installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.
macOS · layer 6, Platform & cloud
Centre: this error. First ring: errors it is linked with (8). 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 (8)
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.
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Homebrew: Error: Your Command Line Tools (CLT) are too outdated.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.
Homebrew: Error: It seems there is already an App at '/Applications/Chrome.app'
A cask install failed because the app is already installed manually (or a leftover exists).
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).
macOS: hdiutil: attach failed - image not recognized / no mountable file systems
The `.dmg` file is corrupted, incomplete, or not actually a disk image (often an HTML download page).
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: There is not enough available storage to install this update / Installation of macOS could not continue
Software Update needs several GB of free space (often 25-35 GB) to download and stage the update.
Two steps away (21)
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).
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.
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: Failure while executing; `git fetch --force origin` exited with 128 / fatal: not in a git directory
`brew update` couldn't fetch the Homebrew repositories — network, a broken git state or safe.directory problems.
gyp: No Xcode or CLT version detected!
node-gyp on macOS can’t find the Xcode Command Line Tools to compile native modules.
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun
The Xcode Command Line Tools are missing or broken — typical right after a macOS update.
macOS: Agreeing to the Xcode/iOS license requires admin privileges, please run "sudo xcodebuild -license" and then retry this command
A new Xcode (or CLT) version needs its license accepted before command-line tools run.
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: “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.
exec /usr/local/bin/docker-entrypoint.sh: exec format error
The container tried to run a binary built for a different CPU architecture (arm64 vs amd64) — or a script with a broken shebang /…
zsh: no matches found: package[extra] (glob pattern not matched)
zsh treats `[ ]`, `*` or `?` in an argument as a glob and fails when nothing matches, unlike bash which passes the text through.
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: 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).
WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! (ssh host key changed)
The server’s SSH host key differs from the one saved in ~/.ssh/known_hosts — usually because the server was rebuilt or the IP was…
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY
apt can’t verify a repository’s signature because the repo’s signing key isn’t installed (or has expired/rotated).
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).
no space left on device (Docker / Linux)
The disk (or inode table) is full — Docker images, build cache, logs and volumes are common culprits.
macOS: Time Machine couldn't complete the backup. / The backup disk image could not be mounted / Backup failed with error 18/19/21/22
A Time Machine backup stopped because the destination is unavailable, full, or the backup set is damaged.
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