Title: Errors when loading Last modified: August 31, 2016 --- # Errors when loading * Resolved [Robin W](https://wordpress.org/support/users/robin-w/) * (@robin-w) * [10 years, 3 months ago](https://wordpress.org/support/topic/errors-when-loading/) * Hey this looks like it will be a great plugin * I get an error after activation * Notice: Undefined variable: this in /www/sites/e12/ee6/gos.rewweb.co.uk/web/wp- content/plugins/bbp-mentions-email-notifications/index.php on line 55 * and when I try and access settings I get : * Notice: wp_enqueue_style was called incorrectly. Scripts and styles should not be registered or enqueued until the wp_enqueue_scripts, admin_enqueue_scripts, or login_enqueue_scripts hooks. Please see Debugging in WordPress for more information.( This message was added in version 3.3.) in /www/sites/e12/ee6/gos.rewweb.co.uk/ web/wp-includes/functions.php on line 3792 * Notice: Undefined variable: this in /www/sites/e12/ee6/gos.rewweb.co.uk/web/wp- content/plugins/bbp-mentions-email-notifications/index.php on line 55 * Warning: call_user_func_array() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in /www/sites/e12/ee6/gos.rewweb. co.uk/web/wp-includes/plugin.php on line 525 * and a blank screen. * [https://wordpress.org/plugins/bbp-mentions-email-notifications/](https://wordpress.org/plugins/bbp-mentions-email-notifications/) Viewing 9 replies - 1 through 9 (of 9 total) * anonymized-13749270 * (@anonymized-13749270) * [10 years, 2 months ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118169) * Hi Robin, * Hope you are doing well. * I am suspecting that your PHP version is something less than the recommended for WordPress so this error is triggered but, not going through this, can you please go to line:55 and add `&` before `$this` variable? * `array( &$this, 'bbpen_settings' )` let me know if it worked, else I can put the plugin file in a different syntax so it simply works without OOP.. * Thanks and have a wonderful weekend. * Samuel * Thread Starter [Robin W](https://wordpress.org/support/users/robin-w/) * (@robin-w) * [10 years, 2 months ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118177) * > array( &$this, ‘bbpen_settings’ ) let me know if it worked * yes that worked. * and yes I was at an old version of php testing for a client, now reverted back to 5.6 and all is fine * Thanks * anonymized-13749270 * (@anonymized-13749270) * [10 years, 2 months ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118179) * Thanks for letting me know Robin! I will be updating soon. * Have a nice day. * Samuel * [jeromias](https://wordpress.org/support/users/jeromias/) * (@jeromias) * [10 years, 1 month ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118228) * Hi Samuel, * I have the same (similar) problem, where the settings page goes blank. I could figure out that it happens at the same spot (line 55), but the reference with ampersand (&$this) didn’t help. When testing on my localhost, it works. * Localhost: PHP Version 5.5.9-1ubuntu4.16 Online: Version 5.3.3 * The only errors/warnings I see on the online are : `PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in /var/www/vhosts/photosynthesis.org.au/httpdocs/wp-includes/ plugin.php on line 525` .. which I have to guess comes from this page. * Any idea what else I could try? * thanks for help, Jerome * [jeromias](https://wordpress.org/support/users/jeromias/) * (@jeromias) * [10 years, 1 month ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118229) * … sorry, using wordpress 4.5.1 on both platforms 🙂 * [jeromias](https://wordpress.org/support/users/jeromias/) * (@jeromias) * [10 years, 1 month ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118230) * Hi Samuel, * I made some more tests and realise that the issue appears before this line. In the __construct() method, the program breaks at line 42, when it says: `$this- >settings['format'] = get_option('bbpen_format')...` * – I’ve tried to wrap the conditional in brackets, but didn’t help. – If I remove the conditional and just add a string, then it works (or at least goes to the next line) – I’ve seen now an error that tells me a bit more: Call to undefined function get_option() * Trying now to get the function to be recognised… * thanks if any ideas Jerome * [jeromias](https://wordpress.org/support/users/jeromias/) * (@jeromias) * [10 years, 1 month ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118231) * Hi Samuel, * sorry for all the confusion above, this was an unrelated problem. The issue remains like I’ve described it first though: The program passes the line: `add_options_page(' bbPress Mentions Email Notifications', 'bbP mentions', 'manage_options', 'bbpmen', array( $this, 'bbpen_settings' ) );` … but the method `bbpen_settings` is not called.. * Thanks for help, Jerome * anonymized-13749270 * (@anonymized-13749270) * [10 years, 1 month ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118232) * Hello [@jeromias](https://wordpress.org/support/users/jeromias/), * As per the [forum welcome](https://codex.wordpress.org/Forum_Welcome), you should be creating your own thread and not bump Mr Robin’s thread 😉 * The problem clearly is with your PHP version, you should upgrade to 5.5.* or [5.6 >](https://wordpress.org/about/requirements/) and you will not see these errors again. * If you can not upgrade or you don’t want to, I will be happy if you [open your own topic](https://wordpress.org/support/plugin/bbp-mentions-email-notifications#topic) and I will edit the plugin file for you to make it work with your outdated EOL version. * Thank you. Samuel * [jeromias](https://wordpress.org/support/users/jeromias/) * (@jeromias) * [10 years, 1 month ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118233) * Hi Samuel, * Thank you for your prompt reply and sorry, Samuel and Robin, for jumping into this thread. Will not happen again 🙂 * I will come back to you when I have decided on upgrade or not. * Thanks again. Jerome Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘Errors when loading’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/bbp-mentions-email-notifications. svg) * [bbPress Mentions Email Notifications](https://wordpress.org/plugins/bbp-mentions-email-notifications/) * [Support Threads](https://wordpress.org/support/plugin/bbp-mentions-email-notifications/) * [Active Topics](https://wordpress.org/support/plugin/bbp-mentions-email-notifications/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/bbp-mentions-email-notifications/unresolved/) * [Reviews](https://wordpress.org/support/plugin/bbp-mentions-email-notifications/reviews/) * 9 replies * 3 participants * Last reply from: [jeromias](https://wordpress.org/support/users/jeromias/) * Last activity: [10 years, 1 month ago](https://wordpress.org/support/topic/errors-when-loading/#post-7118233) * Status: resolved