Warning: Cannot modify header information – headers already sent by

  • panpeter

    (@panpeter)


    6 years, 6 months ago

    Hey folks,

    I have a problem with WP Google Calendar Manager” and I beg you to help me:

    – Installing plugin: OK, no Problem
    – Creating a Google Client ID: OK, no Problem
    – Google Calendar ID: OK, no Problem
    – Import existing Google Calendar in the admin-page: OK, no Problem

    On the admin-page I can see all my events,
    but if I use the shortcut [wpgc-calendar] on a page i get this error message in the front end:

    Warning: Cannot modify header information – headers already sent by (output started at /homepages/21/d13535598/htdocs/app670129389/wp-content/plugins/wp-gcalendar/admin/partials/shortcodes.php:44) in /homepages/21/d13535598/htdocs/app670129389/wp-admin/post.php on line 197

    Warning: Cannot modify header information – headers already sent by (output started at /homepages/21/d13535598/htdocs/app670129389/wp-content/plugins/wp-gcalendar/admin/partials/shortcodes.php:44) in /homepages/21/d13535598/htdocs/app670129389/wp-includes/pluggable.php on line 1210

    What to do?

    Best
    Peter

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