PHP Fatal error: Uncaught ErrorException: Cannot modify header information

  • Resolved rainsey

    (@rainsey)


    1 year, 2 months ago

    Hi, we’ve been receiving the following error in our server logs with the latest update. I’ve sent litespeed report number: SGKESCDN

    Is there any advice on resolving the error?

    [24-Mar-2025 07:44:49 UTC] PHP Fatal error: Uncaught ErrorException: Cannot modify header information – headers already sent by (output started at __mnx_runtime:1) in /home3/domains/abc.com/public_html/wp-content/plugins/litespeed-cache/src/optimize.cls.php:657
    Stack trace: 0 [internal function]: MNXSecRASPModules->{closure}() 1 /home3/domains/abc.com/public_html/wp-content/plugins/litespeed-cache/src/optimize.cls.php(657): header() 2 /home3/domains/abc.com/public_html/wp-content/plugins/litespeed-cache/src/optimize.cls.php(135): LiteSpeed\Optimize->_dns_prefetch_init() 3 /home3/domains/abc.com/public_html/wp-content/plugins/litespeed-cache/src/core.cls.php(288): LiteSpeed\Optimize->init() 4 /home3/domains/abc.com/public_html/wp-includes/class-wp-hook.php(324): LiteSpeed\Core->after_user_init() 5 /home3/domains/abc.com/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 6 /home3/domains/abc.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action() 7 /home3/domains/abc.com/public_html/wp-settings.php(704): do_action() 8 /home3/domains/abc.com/public_html/wp-config.php(58): require_once(‘/home3/…’) 9 /home3/domains/abc.com/public_html/wp-load.php(50): require_once(‘/home3/…’) 10 /home3/domains/abc.com/public_html/wp-blog-header.php(13): require_once(‘/home3/…’) 11 /home3/domains/abc.com/public_html/index.php(17): require(‘/home3/…’) 12 {main}

    • This topic was modified 1 year, 2 months ago by rainsey.
Viewing 2 replies - 1 through 2 (of 2 total)
  • Plugin Support litetim

    (@litetim)

    1 year, 2 months ago

    @rainsey Thank you for report
    Would be helpfull if you can send me a test case that triggers the error.
    Tim

    Thread Starter rainsey

    (@rainsey)

    1 year, 2 months ago

    Hi @litetim, i’m unable to determine how the errors are triggered or cause. I suspect it is the automatic caching function for mobile or desktop views. Our server has no storage space alerts and 10gb is available so unlikely this is the cause.

Viewing 2 replies - 1 through 2 (of 2 total)

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