Title: Upgrade PHP warnings
Last modified: August 30, 2016

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# Upgrade PHP warnings

 *  [martechnc](https://wordpress.org/support/users/martechnc/)
 * (@martechnc)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/upgrade-php-warnings/)
 * Upgrade to latest version of free, getting:
 * Warning: Missing argument 4 for TC_nav_walker::tc_add_bootstrap_classes() in /
   home1/mandjnc1/public_html/wp-content/themes/customizr/inc/parts/class-header-
   nav_walker.php on line 26
 * All over the screen

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

 *  [Rocco Aliberti](https://wordpress.org/support/users/d4z_c0nf/)
 * (@d4z_c0nf)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/upgrade-php-warnings/#post-6415016)
 * Hello,
    which **wordpress** version are you using? Do you use a child-theme? 
   Something in it which might use the filter: `nav_menu_css_class` ?
 *  Thread Starter [martechnc](https://wordpress.org/support/users/martechnc/)
 * (@martechnc)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/upgrade-php-warnings/#post-6415019)
 * WordPress 4.2.4
    Upgraded from 3.3.x to 3.4.6
 * No child theme
 *  [Rocco Aliberti](https://wordpress.org/support/users/d4z_c0nf/)
 * (@d4z_c0nf)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/upgrade-php-warnings/#post-6415023)
 * Ok,
    thanks. Weird. Did you also tried disabling your plugins? Maybe one of them
   uses that filter passing too few arguments. (?)
 *  Thread Starter [martechnc](https://wordpress.org/support/users/martechnc/)
 * (@martechnc)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/upgrade-php-warnings/#post-6415032)
 * For now I have just turned display_errors off in php.ini and that fixed the warnings.
   It is a high production website and going to wait until late at night when there
   is little traffic and see if I can nail down which plugin if any.
 *  Theme Author [presscustomizr](https://wordpress.org/support/users/nikeo/)
 * (@nikeo)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/upgrade-php-warnings/#post-6415104)
 * Hi [@martechnc](https://wordpress.org/support/users/martechnc/) : any update 
   about your issue ?

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

The topic ‘Upgrade PHP warnings’ is closed to new replies.

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## Tags

 * [niclook](https://wordpress.org/support/topic-tag/niclook/)

 * 5 replies
 * 3 participants
 * Last reply from: [presscustomizr](https://wordpress.org/support/users/nikeo/)
 * Last activity: [10 years, 10 months ago](https://wordpress.org/support/topic/upgrade-php-warnings/#post-6415104)
 * Status: not resolved