Cannot modify headrer information

  • Resolved jurasjo

    (@jurasjo)


    7 years, 9 months ago

    Hi

    From time to time I can see php warning like shown below:
    [31-May-2017 10:30:14 UTC] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/suomikac/public_html/kursyonline/wp-content/plugins/wp-fastest-cache/inc/cache.php:234) in /home/suomikac/public_html/kursyonline/wp-content/plugins/lifterlms/vendor/ericmann/wp-session-manager/includes/class-wp-session.php on line 128

    Any idea what is the source of the problem?

Viewing 5 replies - 1 through 5 (of 5 total)
  • Plugin Author Emre Vona

    (@emrevona)

    do you see it on the error_log? or do the visitors see the warning on the page?

    Thread Starter jurasjo

    (@jurasjo)

    I have seen this in the error_log file. I have also asked dev of LifterLMS about this.

    He wrote me this:
    This is an error that would occur if something is output before the LifterLMS session cookie has been written. We write our cookies very early in the lifecycle of WordPress and I can't really imagine why something would have to be output (html) before our cookie is written (we write the cookie at init -1). It could be that fastest cache is outputting cached HTML very early in order to prevent other things from happening.

    Do You think it is something which should be taken care in the LifterLMS or in Your plugin? Or maybe there is no need to worry about?

    Plugin Author Emre Vona

    (@emrevona)

    No need to worry about it I guess.

    Thread Starter jurasjo

    (@jurasjo)

    Ok. THX.

    Plugin Author Emre Vona

    (@emrevona)

    you are welcome.

Viewing 5 replies - 1 through 5 (of 5 total)
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