Install and update show headers-already-sent warnings
Installing or updating the plugin throws headers-already-sent warnings that block setup, even after updates.
Tier II · Emerging Problems that are still building up.
3 public reports · first reported 1 September 2023 · last reported 29 December 2025
What's going wrong
Site owners installing or updating this button plugin on recent WordPress and PHP 8.3 setups report a Cannot modify header information warning.
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 3 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.