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Troubleshooting Common Complianz Plugin Update Errors

26 threads Sep 7, 2025 Plugin → Complianz – gdpr/ccpa cookie consent

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Updates to the 'Complianz – GDPR/CCPA Cookie Consent' plugin are essential for security and compliance, but they can sometimes introduce unexpected errors. Based on community reports, here are the most common post-update issues and their solutions.

1. PHP Fatal Errors: Missing Functions or Classes

Problem: Errors like Call to undefined function imagecreatefromjpeg() or Class "COMPLIANZ" not found often appear after an update.

Cause: These are typically caused by a server configuration mismatch (like a missing PHP GD extension) or a incomplete plugin update where essential files fail to load correctly.

Solution:

  • Check Server Requirements: Ensure your server has the required PHP extensions (like GD) enabled. Contact your hosting provider for assistance.
  • Reinstall the Plugin: A clean reinstall can resolve issues caused by corrupted or missing files during the update process. Deactivate, delete, and then freshly install the latest version of Complianz from the WordPress repository.
  • Verify File Integrity: Security plugins like Wordfence may flag false positives. The Complianz team has indicated that a readme change can sometimes trigger these warnings, and they can usually be ignored.

2. REST API 404 Errors

Problem: After updating, you may see “Connection to the server lost” in the wizard, with browser console errors for wp-json/complianz/v1/ endpoints returning a 404 Not Found status.

Cause: This is frequently related to a conflict with the WordPress translation system or permalink structures.

Solution:

  • Flush Permalinks: Go to Settings > Permalinks in your WordPress dashboard and simply click “Save Changes” without making any modifications. This refreshes the rewrite rules and can restore API endpoint access.

3. Conflicts with Other Plugins or Themes

Problem: Fatal errors or functionality breaks that occur only when another specific plugin (e.g., Site Kit by Google, Divi Pixel, PixelYourSite) is active.

Cause: Code changes in the updated Complianz version can sometimes interact unexpectedly with other software.

Solution:

  • Identify the Conflict: Deactivate all other plugins and switch to a default WordPress theme (like Twenty Twenty-Four). If the error disappears, reactivate your plugins one by one to identify the culprit.
  • Check for Updates: Ensure all your plugins and themes are updated to their latest versions, as developers often release compatibility patches.
  • Report the Issue: If you identify a conflict, the community can benefit if you report the specific plugin/theme combination in forums. The Complianz team often investigates and releases fixes for known conflicts.

4. Performance Issues and Heavy Database Usage

Problem: The site or admin dashboard becomes slow after an update, with hosting logs showing heavy MySQL queries from Complianz.

Cause: New features, particularly related to the cookie scan, can increase database read/write operations temporarily.

Solution:

  • Implement Caching: A robust object caching solution (like Redis or Memcached) can dramatically reduce the load on your database by storing frequently accessed data in memory.
  • Monitor the Situation: Some performance impact may be temporary during a initial scan. If slowness persists, it may indicate a deeper issue worth investigating.

General Troubleshooting Steps

For any error after an update, always try these steps first:

  1. Clear All Caches: Clear your WordPress caching plugin, server-level cache (e.g., Varnish), and CDN cache (e.g., Cloudflare).
  2. Enable Debugging: Add define( 'WP_DEBUG', true ); and define( 'WP_DEBUG_LOG', true ); to your wp-config.php file. This will create a debug.log file in your /wp-content/ directory with detailed error messages that are crucial for diagnosis.
  3. Check for Failed Updates: An update can sometimes fail silently. Re-downloading and installing the plugin manually is a highly effective fix for many strange issues.

While updates can be tricky, they are crucial for maintaining compliance and security. Following this guide should help you resolve the most common issues encountered by the community.

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