Activation fails with redeclare wp_cache_add fatal error
Activating the plugin triggers a fatal Cannot redeclare wp_cache_add error that takes the whole site offline.
Tier II · Emerging Problems that are still building up.
11 public reports · first reported 3 September 2013 · last reported 11 March 2024
What's going wrong
Site owners installing the Memcached Object Cache plugin on WordPress report that activation halts with a fatal error saying a wp_cache_add function is already declared.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 11 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.