Error map
directory index of "/var/www/" is forbidden Nginx: [error] directory index of "/var/www/html/" is forbidden (403 Forbidden)
Nginx / Apache · layer 3, Edge & web server
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)
HTTP 403 Forbidden
The server understood the request but refuses to authorize it — you (or the server process) are not allowed to access this resour…
Browser: Welcome to nginx! If you see this page, the nginx web server is successfully installed and working
Requests are served by the default server block, not your site's block.
Nginx: [error] open() "/home/user/site/index.html" failed (13: Permission denied), 403 Forbidden
The nginx worker user can't read the requested file or traverse a parent directory.
Nginx/Apache: ModSecurity: Access denied with code 403 (phase 2). Matched "Operator GE matched 5 at TX:anomaly_score"
The ModSecurity WAF (OWASP Core Rule Set) blocked the request as suspicious.
Nginx: [error] rewrite or internal redirection cycle while internally redirecting to "/index.php" (500 Internal Server Error)
Nginx kept internally redirecting (more than 10 times), typically from a `try_files` or `rewrite` that points back to itself.
Apache: [authz_core:error] AH01630: client denied by server configuration: /var/www/html/
Apache 2.4 authorisation denied access to the directory (403) because no `Require all granted` applies.
Apache: [core:error] AH00037: Symbolic link not allowed or link target not accessible: /var/www/html/current
Apache refuses to follow a symlink because `FollowSymLinks`/`SymLinksIfOwnerMatch` isn't allowed or the target isn't readable.
Apache: [autoindex:error] AH01276: Cannot serve directory /var/www/html/: No matching DirectoryIndex (index.html,index.php) found, and server-generated directory index forbidden by Options directive
A directory was requested, no index file exists, and directory listing (`Options Indexes`) isn't enabled.
Two steps away (22)
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.
AWS S3: AccessDenied (403) when calling GetObject / PutObject
An IAM policy, bucket policy, ACL/ownership setting, Block Public Access or KMS key policy denied the S3 request.
Linux: Permission denied
Your user (or the service user) lacks read/write/execute permission on a file, directory or one of its parents.
Nginx: nginx: [emerg] duplicate location "/" in /etc/nginx/sites-enabled/default:52
Two `location` blocks with the same match exist in one server block (often from two included files).
Nginx: nginx: [warn] conflicting server name "example.com" on 0.0.0.0:80, ignored
Two server blocks listen on the same port with the same `server_name`; the second is ignored.
Nginx: [error] client intended to send too large body: 5242880 bytes (413 Request Entity Too Large)
A request body exceeded `client_max_body_size` (default 1 MB), so Nginx returned 413 before reaching your app.
user is not in the sudoers file. This incident will be reported.
Your account isn’t allowed to use sudo.
WordPress: Sorry, you are not allowed to access this page.
Your user role lacks the capability for that admin screen — or the database table prefix / user capabilities are out of sync afte…
Error: listen EACCES: permission denied 0.0.0.0:80
Node isn’t allowed to bind that port — ports below 1024 need root on Linux/macOS, and some Windows ports are reserved.
Cloudflare Error 1020: Access Denied
A Cloudflare firewall/WAF custom rule blocked the request — the visitor’s IP, country, user agent or request pattern matched a bl…
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
Nginx (or another server) can’t listen on the port because another process already holds it — often Apache, another Nginx, or a s…
API/app requests get 403 with cf-mitigated: challenge (Bot Fight Mode / challenge on non-browser clients)
Cloudflare is answering API calls, webhooks or mobile-app requests with a challenge page (HTML 403) because bot protection treats…
FastCGI sent in stderr: "Primary script unknown"
Nginx passed a script path to PHP-FPM that PHP-FPM couldn’t find — usually a wrong SCRIPT_FILENAME or root.
Laravel on shared hosting: homepage works but every other route returns 404 Not Found
The web server isn't sending requests to `public/index.php`, so only the root path works — the rewrite rules aren't active.
Apache: AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary
Rewrite rules loop internally, so Apache aborts with a 500.
Apache: AH00558: apache2: Could not reliably determine the server's fully qualified domain name
A harmless startup warning: Apache has no global ServerName, so it guessed one from the host’s IP.
Apache: AH00526: Syntax error on line 12 of /etc/apache2/sites-enabled/site.conf: Invalid command 'Foo', perhaps misspelled or defined by a module not included in the server configuration
Apache's config has a syntax problem or a directive from a module that isn't loaded.
Apache: [core:alert] /var/www/html/.htaccess: Invalid command 'php_value', perhaps misspelled or defined by a module not included in the server configuration
A `.htaccess` file uses a directive the server can't handle, causing 500 errors for the whole directory.
Too many levels of symbolic links (ELOOP)
A symlink points to itself, directly or through a chain, so path resolution loops.
Apache: [ssl:warn] AH01909: example.com:443:0 server certificate does NOT include an ID which matches the server name
Apache's SSL virtual host name does not match any name inside the certificate it loads.
Apache: AH00091: apache2: could not open error log file /var/log/apache2/error.log. AH00015: Unable to open logs (Permission denied)
Apache can't open its log files — permissions, a missing directory or disk problems.
Apache: AH00112: Warning: DocumentRoot [/var/www/example.com/public_html] does not exist
A virtual host points to a directory that doesn't exist.
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