Title: Error message when activated Last modified: August 21, 2016 --- # Error message when activated * Resolved [festsoft](https://wordpress.org/support/users/festsoft/) * (@festsoft) * [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/) * When plugin is activated I get these messages on the dashboard. They disappear when deactivated. —- Warning: Cannot modify header information – headers already sent by (output started at /home/content/76/10978276/html/wp-content/plugins/ svg-vector-icon-plugin/wordpress-svg-icons-plugin.php:8811) in /home/content/ 76/10978276/html/wp-includes/pluggable.php on line 896 * The plugin generated 2 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin. —- I would be grateful for any help. I am relatively inexperienced with WordPress. Thank you. David Johnson * [http://wordpress.org/plugins/svg-vector-icon-plugin/](http://wordpress.org/plugins/svg-vector-icon-plugin/) Viewing 8 replies - 1 through 8 (of 8 total) * Plugin Author [Evan Herman](https://wordpress.org/support/users/eherman24/) * (@eherman24) * [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/#post-4571196) * Hey David * I am looking into the issue and will push out an update when it is resolved. Sorry for any issues. * Evan * Plugin Author [Evan Herman](https://wordpress.org/support/users/eherman24/) * (@eherman24) * [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/#post-4571200) * I just updated the plugin on two other sites I am running and am not seeing the issue there. Are you able to open up and check what is happening in that file on that line specified? * Thread Starter [festsoft](https://wordpress.org/support/users/festsoft/) * (@festsoft) * [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/#post-4571205) * Code extract from wp-includes/pluggable.php The line 896 is the header(…) fn 5 lines from the end (Thanks for looking at this so promptly. My version is 2.3) * ``` if ( !function_exists('wp_redirect') ) : /** * Redirects to another page. * * @since 1.5.1 * @uses apply_filters() Calls 'wp_redirect' hook on $location and $status. * * @param string $location The path to redirect to. * @param int $status Status code to use. * @return bool False if $location is not provided, true otherwise. */ function wp_redirect($location, $status = 302) { global $is_IIS; /** * Filter the redirect location. * * @since 2.1.0 * * @param string $location The path to redirect to. * @param int $status Status code to use. */ $location = apply_filters( 'wp_redirect', $location, $status ); /** * Filter the redirect status code. * * @since 2.3.0 * * @param int $status Status code to use. * @param string $location The path to redirect to. */ $status = apply_filters( 'wp_redirect_status', $status, $location ); if ( ! $location ) return false; $location = wp_sanitize_redirect($location); if ( !$is_IIS && php_sapi_name() != 'cgi-fcgi' ) status_header($status); // This causes problems on IIS and some FastCGI setups header("Location: $location", true, $status); return true; } endif; ``` * [esmi](https://wordpress.org/support/users/esmi/) * (@esmi) * [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/#post-4571212) * The issue is in wp-content/plugins/svg-vector-icon-plugin/wordpress-svg-icons- plugin.php – not pluggable.php. Try reviewing [Solving “headers already sent” warnings](http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F). * Thread Starter [festsoft](https://wordpress.org/support/users/festsoft/) * (@festsoft) * [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/#post-4571235) * It was on line 8811 of wordpress-svg-icons-plugin.php * ``` ``` * By deleting ?>… ``` * Should be * ``` ``` * Thank you for pin pointing the issue. I will push out an update, possibly on my lunch break. Thanks again! * Evan * Plugin Author [Evan Herman](https://wordpress.org/support/users/eherman24/) * (@eherman24) * [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/#post-4571317) * Hey David, * I’ve just pushed out the newest patch for the plugin which should resolve the issue. I know you have sorted things out yourself, but for future releases this problem should be resolved. Again, sorry about that. * Evan * Thread Starter [festsoft](https://wordpress.org/support/users/festsoft/) * (@festsoft) * [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/#post-4571322) * Thanks Evan, and thanks to esmi I now understand how to begin to interpret the mysterious ‘headers already sent’ messages! Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘Error message when activated’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/svg-vector-icon-plugin_cd8d3a.svg) * [WP SVG Icons](https://wordpress.org/plugins/svg-vector-icon-plugin/) * [Frequently Asked Questions](https://wordpress.org/plugins/svg-vector-icon-plugin/#faq) * [Support Threads](https://wordpress.org/support/plugin/svg-vector-icon-plugin/) * [Active Topics](https://wordpress.org/support/plugin/svg-vector-icon-plugin/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/svg-vector-icon-plugin/unresolved/) * [Reviews](https://wordpress.org/support/plugin/svg-vector-icon-plugin/reviews/) * 8 replies * 3 participants * Last reply from: [festsoft](https://wordpress.org/support/users/festsoft/) * Last activity: [12 years, 3 months ago](https://wordpress.org/support/topic/error-message-when-activated-1/#post-4571322) * Status: resolved