Error map
missing the MySQL extension WordPress: Your PHP installation appears to be missing the MySQL extension which is required by WordPress
WordPress · layer 4, Application & API
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)
docker-compose: command not found / 'compose' is not a docker command
Your system has only one of the two Compose flavours: the old docker-compose (v1) binary or the newer docker compose (v2) plugin.
WordPress: Error Establishing a Database Connection
WordPress can’t connect to its MySQL/MariaDB database with the credentials in wp-config.php, or the database server is down.
WordPress: Your server is running PHP version 7.2 but WordPress 6.x requires at least 7.4 / This plugin requires a newer version of PHP
WordPress core, a plugin or a theme needs a newer PHP than the server runs.
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.
aws: error: argument command: Invalid choice / Unknown options
The AWS CLI doesn’t recognise the command or option — usually CLI v1 vs v2 differences, an old CLI version, or a typo.
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).
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…
PHP: sh: 1: /usr/sbin/sendmail: not found — mail() returns false
PHP's `mail()` calls the `sendmail_path` program, but it is not installed or the path in php.ini is wrong.
Two steps away (24)
fatal: not a git repository (or any of the parent directories): .git
You ran a Git command outside a Git working tree.
bash: command not found
The shell can’t find an executable with that name in any directory on your PATH.
docker compose: services.x Additional property y is not allowed / yaml: line N: mapping values are not allowed
The compose file is invalid YAML or uses a key Compose doesn’t recognise at that level (usually an indentation mistake).
MySQL ERROR 1045 (28000): Access denied for user
MySQL rejected the login — wrong password, wrong user/host combination, or the user doesn’t exist.
MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket
The client couldn’t reach the MySQL server — it isn’t running, or the client is looking for the socket/port in the wrong place.
HTTP 500 Internal Server Error
The server hit an unexpected condition — usually an unhandled exception or misconfiguration in the application.
no matches for kind "Ingress" in version "extensions/v1beta1" (resource mapping not found)
The manifest uses an apiVersion/kind the cluster doesn’t serve — a removed beta API, or a CRD that isn’t installed.
Minimum supported Gradle version is 8.7. Current version is 8.2
The Android Gradle Plugin (AGP) version in your build needs a newer Gradle wrapper version.
Namespace not specified. Specify a namespace in the module's build file (AGP 8)
AGP 8 requires android { namespace = "…" } in each module’s build file; the package attribute in AndroidManifest.xml is no longer…
Gradle: Unsupported class file major version / Android Gradle plugin requires Java 17 to run
The JDK running Gradle doesn’t match what the Gradle version or Android Gradle Plugin (AGP) supports.
Author identity unknown *** Please tell me who you are.
Git doesn’t know your name and email for commits.
npm ERR! enoent ENOENT: no such file or directory, open '/path/package.json'
npm ran in a directory without a package.json.
ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Build tools (Gradle, Maven, Android tools) can’t find a JDK.
yarn: command not found
Yarn isn’t installed (or not enabled through Corepack) on this machine.
Error: createRoot(...): Target container is not a DOM element.
The element passed to createRoot/render doesn’t exist when the script runs.
Android: INSTALL_FAILED_UPDATE_INCOMPATIBLE
An app with the same package name but a different signing key is already installed on the device.
Warning: ReactDOM.render is no longer supported in React 18. Use createRoot instead.
The app uses the legacy root API, so React 18 features (concurrent rendering, automatic batching) are disabled.
Docker Desktop: WSL 2 installation is incomplete / WSL update required
Docker Desktop on Windows needs WSL 2 and its Linux kernel; they’re missing, outdated or disabled.
Google Sign-In: com.google.android.gms.common.api.ApiException: 10 (DEVELOPER_ERROR)
Google Sign-In is misconfigured — the app’s package name or SHA-1/SHA-256 signing fingerprint isn’t registered in Google Cloud/Fi…
Firebase Auth: auth/invalid-credential (auth/wrong-password, auth/user-not-found, auth/invalid-login-credentials)
Firebase rejected the email/password sign-in — wrong password, no such user, or a provider credential that’s malformed/expired.
Firebase Auth: auth/popup-closed-by-user / auth/popup-blocked / auth/cancelled-popup-request
The OAuth popup for Google/GitHub sign-in was closed, blocked by the browser, or replaced by another popup request.
PHP mail() returns false / emails not delivered
PHP’s mail() function failed or emails never arrive (spam or rejected).
SMTP: 421 4.7.0 Our system has detected an unusual rate of unsolicited mail originating from your IP address. Mail sent from your IP address has been temporarily rate limited
The receiving server (often Gmail or Outlook) is temporarily throttling your mail because the volume or reputation of your sendin…
SMTP: 450 4.7.1 <user@example.com>: Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/example.com.html
The recipient server deliberately rejected the first delivery attempt from an unknown sender (greylisting) and expects a legitima…
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