Back-End & Server-Side

• Resolving Database Connection Errors

  Common Causes Incorrect credentials (username/password). Firewall blocking the database port (e.g., 3306 for MySQL). Database service stopped. How to Fix: 1. Verify Credentials ...

• Fixing PHP/Python/Node.js Runtime Errors

  Common Runtime Errors 1. PHP Fatal Errors Example: Call to undefined function(). Fix: // Enable error reporting ini_set('display_errors', 1); error_reporting(E_ALL); ...

• Server Configuration Issues (Apache/Nginx)

  Common Problems 403 Forbidden errors (permission issues). 502 Bad Gateway (proxy errors). Rewrite rules not working. How to Fix: 1. Apache: Fix 403 Forbidden Check directory permiss...