Source evidence

‘headers already sent’ errors

Featherweight · support · 2026-06-11T20:45:00+00:00

Featherweight plugin evidence original source source API

mixedsentiment

highseverity

0.95relevance

2replies

Evidence linked to opportunitycommercial context

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Open evidence

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Conversation

support

RS resolved

Hi there, Excellent job with the new version of the plugin. There was an update just before you changed the name and it introduced a ‘headers already sent’ error which hasn’t been resolved with the new version. Here’s a sample of the two errors I’m getting: [11-Jun-2026 21:27:53 Europe/London] PHP Warning: Cannot modify header information - headers already sent by (output started at /PATHTOPLUGIN/wp-disable/lib/class-wpperformance.php:660) in /PATHTOWP/wp-includes/rest-api/class-wp-rest-server.php on line 1921 [11-Jun-2026 21:27:54 Europe/London] PHP Warning: Cannot modify header information - headers already sent by (output started at /PATHTOPLUGIN/wp-disable/lib/class-wpperformance.php:660) in /PATHTOWP/wp-includes/pluggable.php on line 1535 Any ideas? Cheers, RS thank you, it took a minute 🙂 ill get a fix posted today for this, thanks for the heads issue resolved, plugin in an update queue, you should see it tomorrow Version 2.2.2 will be released to sites in about 24 hours. WordPress.org currently delays plugin updates by 24 hours so moderators and security scanners can review changes before they reach users.

Commercial Context

Opportunity

performance monitoring and client reporting

Optimization speed regression monitoring for keeping sites fast and proving optimization work

Buyer: site owners, agencies, and maintenance teams

Wedge: detect optimization slowdowns, cache conflicts, asset regressions, and client-report impact

Proof Blocked card complete market

Analysis

heuristic-v1

Summary: ‘headers already sent’ errors: users show security, bugs, compatibility pain that may indicate a product gap.

Evidence quote: ‘headers already sent’ errors Hi there, Excellent job with the new version of the plugin.

Affected feature: form

security bugs compatibility performance

Plugin

API

Featherweight

10.0K active installs · 323.5K downloads · rating 82.0

disable embeds disable emoji optimization performance remove query strings

Comments

2 shown

jody nesbitt 2026-06-12T06:10:00+00:00

thank you, it took a minute 🙂 ill get a fix posted today for this, thanks for the heads

jody nesbitt 2026-06-12T07:47:00+00:00

issue resolved, plugin in an update queue, you should see it tomorrow Version 2.2.2 will be released to sites in about 24 hours. WordPress.org currently delays plugin updates by 24 hours so moderators and security scanners can review changes before they reach users.