Troubleshooting Guide

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  1. Troubleshooting Guide

This guide is designed to help beginners diagnose and resolve common issues encountered while using MediaWiki. It covers a range of problems, from editing difficulties to display errors, and provides step-by-step instructions to get you back on track. This document assumes you are using MediaWiki version 1.40, though many of the principles apply to earlier versions as well.

Understanding the Basics

Before diving into specific problems, it's crucial to understand the fundamental components of MediaWiki.

  • Pages: The core of MediaWiki, containing content. These can be articles, help pages, or user pages.
  • Editing: The process of modifying page content. MediaWiki provides a visual editor and a wikitext editor (more on this later). See Help:Editing for more details.
  • Wikitext: The markup language used to format content in MediaWiki. It's a relatively simple language, but can be daunting for beginners. Refer to Help:Wikitext for a comprehensive overview.
  • Categories: A system for organizing pages based on topic. Pages are added to categories using the `` syntax.
  • Templates: Pre-defined snippets of wikitext that can be reused across multiple pages. See Help:Templates for more information.
  • Extensions: Add-ons that extend the functionality of MediaWiki. These can range from simple improvements to major new features.

Common Editing Problems

These are issues you might encounter while attempting to edit a page.

1. Edit Conflicts

Edit conflicts occur when two or more users attempt to edit the same page simultaneously. MediaWiki detects this and presents you with a screen showing both your changes and the changes made by others.

Solution:

1. Carefully compare your changes with the other user's changes. 2. Copy the content from the combined edit box, merging your changes with theirs. Be mindful of losing data. 3. Click "Show preview" to ensure the merged content looks correct. 4. Click "Publish page" to save your changes.

2. Problems with Wikitext Syntax

Wikitext can be finicky. Even a small mistake can prevent your changes from displaying correctly.

Solution:

1. Use the Visual Editor: If you're struggling with wikitext, the Visual Editor provides a more user-friendly interface. It allows you to format text using buttons and menus, similar to a word processor. 2. Preview Your Changes: Always click "Show preview" before saving your edits. This allows you to see how your changes will look and identify any syntax errors. 3. Check for Common Errors: 

   *   Unbalanced Brackets: Ensure that every opening bracket (`{`, `[`, `(`, `<`) has a corresponding closing bracket.
   *   Incorrect Links:  Verify that your internal links (link) are correctly formatted and point to existing pages.
   *   Missing Categories:  Double-check that your category tags (``) are properly formatted.
   *   Incorrect Table Syntax: Tables can be complex.  Refer to Help:Tables for detailed instructions.

4. Consult the Help Pages: Help:Wikitext is your best resource for understanding wikitext syntax.

3. Saving Problems

Sometimes, you might encounter errors when attempting to save your edits.

Solution:

1. Check Your Internet Connection: A poor internet connection can cause saving errors. 2. Page Size Limit: MediaWiki has a page size limit. If your edits exceed this limit, you'll need to split the content into multiple pages. See Help:Splitting pages for guidance. 3. Database Issues: If the problem persists, there might be an issue with the MediaWiki database. Contact your wiki administrator. 4. Browser Issues: Try clearing your browser cache and cookies or using a different browser.

4. Visual Editor Issues

The Visual Editor can sometimes be unstable or exhibit unexpected behavior.

Solution:

1. Switch to Wikitext: If the Visual Editor is causing problems, switch to the wikitext editor. 2. Disable Extensions: Certain browser extensions can interfere with the Visual Editor. Try disabling them temporarily. 3. Update Your Browser: Ensure that you're using the latest version of your browser. 4. Report the Bug: If you suspect a bug in the Visual Editor, report it to the MediaWiki developers.

Display Problems

These are issues related to how pages are displayed in the browser.

1. Broken Images

Images might not display correctly if they are missing, corrupted, or incorrectly linked.

Solution:

1. Verify File Existence: Ensure that the image file exists in the MediaWiki file repository. 2. Check File Name: Double-check that the file name in your wikitext code matches the actual file name. 3. Check File Permissions: Ensure that the file has the correct permissions for viewing. 4. Clear Cache: Clear your browser cache to ensure you're viewing the latest version of the image. 5. Check for Hotlinking Restrictions: If the image is hosted externally, ensure hotlinking is allowed.

2. Incorrect Formatting

Text might not be formatted as expected due to wikitext errors or CSS conflicts.

Solution:

1. Inspect the Wikitext: Examine the wikitext code to identify any formatting errors. 2. Check CSS Styles: If you're familiar with CSS, inspect the wiki's CSS files to identify any conflicting styles. MediaWiki:Common.css is a common location for site-wide CSS. 3. Clear Cache: Clear your browser cache and the MediaWiki server cache. 4. Disable Extensions: Browser extensions can sometimes interfere with CSS rendering.

3. Slow Page Loading

Pages might load slowly due to a variety of factors, including large file sizes, excessive database queries, or server issues.

Solution:

1. Optimize Images: Compress images to reduce their file size. 2. Minimize Database Queries: Avoid using complex templates or queries that can slow down page loading. 3. Enable Caching: Configure MediaWiki to use caching to reduce database load. 4. Check Server Performance: If you're a wiki administrator, monitor your server's performance to identify any bottlenecks. Consider upgrading your server hardware if necessary. 5. Use a Content Delivery Network (CDN): A CDN can help distribute your wiki's content to users around the world, reducing latency.

4. Layout Issues

The page layout might be broken or distorted due to CSS conflicts or HTML errors.

Solution:

1. Inspect the HTML: Use your browser's developer tools to inspect the HTML code and identify any errors. 2. Check CSS Styles: Examine the wiki's CSS files for conflicting styles. 3. Clear Cache: Clear your browser cache and the MediaWiki server cache. 4. Disable Extensions: Browser extensions can sometimes interfere with HTML rendering.

Advanced Troubleshooting

These are more complex issues that might require assistance from a wiki administrator or developer.

1. PHP Errors

PHP errors can cause a variety of problems, including white screens of death or unexpected behavior.

Solution:

1. Check the PHP Error Log: The PHP error log contains detailed information about PHP errors. Your wiki administrator can access this log. 2. Disable Extensions: Try disabling extensions one by one to identify the culprit. 3. Update PHP: Ensure that you're using a supported version of PHP. 4. Contact Your Hosting Provider: If you suspect a server-side issue, contact your hosting provider.

2. Database Errors

Database errors can occur if the database is corrupted, overloaded, or incorrectly configured.

Solution:

1. Check the Database Server: Ensure that the database server is running and accessible. 2. Run Database Repair Tools: MySQL provides tools for repairing corrupted databases. 3. Optimize Database Queries: Identify and optimize slow database queries. 4. Increase Database Resources: If the database is overloaded, consider increasing its resources (e.g., memory, CPU). 5. Restore from Backup: If all else fails, restore the database from a recent backup.

3. Extension Conflicts

Conflicts between extensions can cause unexpected behavior or errors.

Solution:

1. Disable Extensions: Disable extensions one by one to identify the conflicting extensions. 2. Update Extensions: Ensure that you're using the latest versions of all extensions. 3. Report the Bug: Report the conflict to the extension developers.

4. Server Configuration Issues

Incorrect server configuration can cause a variety of problems.

Solution:

1. Check Apache/Nginx Configuration: Ensure that the web server is correctly configured to serve MediaWiki. 2. Check PHP Configuration: Ensure that PHP is configured correctly for MediaWiki. 3. Check Database Configuration: Ensure that the database is configured correctly. 4. Contact Your Hosting Provider: If you're unsure how to configure your server, contact your hosting provider.

Resources and Further Help

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