Save General Settings show Warning

When I click on Save in General Settings un Appointments+ I receive a warning PHP.

Warning: is_a() expects parameter 2 to be string, object given in /home/snltc/public_html/wp-content/plugins/appointments/admin/pages/class-admin-settings-page.php on line 322

Warning: Cannot modify header information - headers already sent by (output started at /home/snltc/public_html/wp-content/plugins/appointments/admin/pages/class-admin-settings-page.php:322) in /home/snltc/public_html/wp-includes/pluggable.php on line 1195

  • James Morris

    Hello christian,

    I hope you are well today.

    These warnings are consistent with a possible plugin conflict, especially the Warning: Cannot modify header information line.

    There's a couple troubleshooting steps I'd like you to try to see if we can narrow down the cause of this problem.

    First, could you please run a plugin conflict test as outlined in the following article? This will eliminate the possibility of a conflict with another plugin. https://premium.wpmudev.org/docs/getting-started/getting-support/

    If that does not lead to a solution, could you please enable WP_DEBUG and provide us with the output of your debug.log file?

    To enable WP_DEBUG, change the following line in your wp-config.php file:

    define('WP_DEBUG', false);

    To this:

    // Enable WP_DEBUG mode
    define( 'WP_DEBUG', true );
    
    // Enable Debug logging to the /wp-content/debug.log file
    define( 'WP_DEBUG_LOG', true );
    
    // Disable display of errors and warnings
    define( 'WP_DEBUG_DISPLAY', false );
    @ini_set( 'display_errors', 0 );

    After you've visited the pages that are causing you problems, please go to wp-content/ on your server via FTP and download the debug.log file to your local computer. Then, open that file with a text editor like notepad (Windows), GEdit (Linux), or TextEdit (Mac). You can then save the file as a .txt file and upload it here as an attachment to your post.

    I look forward to seeing the results of your tests.

    Best regards,

    James Morris

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