Introduction

WooCommerce products not displaying when query or template issue. This guide provides step-by-step diagnosis and resolution.

Symptoms

Typical error output:

bash
Error: WordPress operation failed
Check wp-content/debug.log for details
Enable WP_DEBUG in wp-config.php for more information

Common Causes

  1. 1.PHP memory or execution time limit exceeded
  2. 2.Plugin or theme compatibility issue
  3. 3.Database connection or table corruption
  4. 4.File permission or .htaccess configuration issue

Step-by-Step Fix

Step 1: Check Current State

bash
# Check WordPress debug log
tail -f wp-content/debug.log
# Verify wp-config.php
cat wp-config.php | grep -E "DB_NAME|DB_USER|WP_DEBUG"
# Check file permissions
ls -la wp-content/

Step 2: Identify Root Cause

bash
# Check PHP error log
tail -f /var/log/php/error.log
# Verify database connection
wp db check
# List active plugins
wp plugin list --status=active

Step 3: Apply Primary Fix

```bash # Primary fix: Increase limits and debug # Edit wp-config.php define( 'WP_MEMORY_LIMIT', '256M' ); define( 'WP_DEBUG', true ); define( 'WP_DEBUG_LOG', true );

# Fix permissions chmod -R 755 wp-content/ chown -R www-data:www-data wp-content/ ```

Step 4: Apply Alternative Fix

```bash # Alternative: Disable plugins via FTP # Rename plugins folder mv wp-content/plugins wp-content/plugins-disabled

# Create fresh .htaccess # WordPress -> Settings -> Permalinks -> Save Changes

# Repair database wp db repair ```

Step 5: Verify the Fix

bash
curl -I https://yourdomain.com
# Should return 200 OK
wp plugin list --status=active
# List active plugins

Common Pitfalls

  • Not enabling debug mode before troubleshooting
  • Installing too many plugins without testing
  • Ignoring PHP version requirements for plugins
  • Not backing up before making changes

Best Practices

  • Keep WordPress and plugins updated
  • Use staging environment for testing
  • Regular backups with verified restore
  • Monitor site health continuously
  • WordPress White Screen
  • Database Connection Error
  • Plugin Conflict
  • Memory Limit Exceeded