Title: Warning Errors
Last modified: August 7, 2020

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# Warning Errors

 *  [cbrockwell01](https://wordpress.org/support/users/cbrockwell01/)
 * (@cbrockwell01)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/warning-errors-10/)
 * I am fairly new to wp and have been tasked with updating and maintaining my company’s
   preexisting website. Whenever I log into my account, I am shown a variety of 
   Warning messages. I am unsure how to fix any of them, so any help would be greatly
   appreciated.
 * The warnings are listed below:
 * Warning: Declaration of Axiom_Plugin_Updater::download_package($package) should
   be compatible with WP_Upgrader::download_package($package, $check_signatures 
   = false) in /home/tporter1/public_html/wp-content/plugins/masterslider/admin/
   includes/classes/class-axiom-plugin-updater.php on line 29
 * Warning: session_start(): Cannot start session when headers already sent in /
   home/tporter1/public_html/wp-content/plugins/visual-products-configurator-for-
   woocommerce/admin/class-vpc-admin.php on line 125
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/tporter1/public_html/wp-content/plugins/masterslider/admin/includes/
   classes/class-axiom-plugin-updater.php:29) in /home/tporter1/public_html/wp-includes/
   functions.php on line 6221
 * Warning: preg_match_all(): Compilation failed: invalid range in character class
   at offset 11 in /home/tporter1/public_html/wp-content/plugins/js_composer_theme/
   include/autoload/hook-vc-grid.php on line 162
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/tporter1/public_html/wp-content/plugins/masterslider/admin/includes/
   classes/class-axiom-plugin-updater.php:29) in /home/tporter1/public_html/wp-admin/
   post.php on line 231

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/)
 * (@sterndata)
 * Volunteer Forum Moderator
 * [5 years, 9 months ago](https://wordpress.org/support/topic/warning-errors-10/#post-13223320)
 * I recommend asking at [https://wordpress.org/support/plugin/master-slider/#new-post](https://wordpress.org/support/plugin/master-slider/#new-post)
   so the plugin’s developers and support community can help you with this.
 *  [Website Rob](https://wordpress.org/support/users/website-rob/)
 * (@website-rob)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/warning-errors-10/#post-13223332)
 * Greetings and Welcome
 * Unfortunately you have been presented with errors that will take some digging,
   troubleshooting and time to resolve. This could require doing a lot of hands-
   on investigating.
 * Yes, you could continue to ask questions at this Forum although the answers might
   confuse you more. Someone, like me for example, could say to Disable all Plugins
   and see if the error msgs. go away. If they do then Active the Plugins one at
   time until you get an error msg. Then Disable the one just Enabled and continue
   this process until all Plugins have been checked. Once the trouble Plugins are
   known you decide what to do–remove them or figure out what the problem is with
   them. Do they need updating, is there a conflict with another Plugin, etc.
 * If you don’t know how to do these things already, you will need to learn as Adding/
   Removing / Troubleshooting Plugins is a requirement to using WordPress. There
   are other things you need to start learning about as well, on your own, as Replies
   in this Forum might be over a longer period of time than you would prefer.
 * If the front-side is currently working correctly it will give you some time to
   find
    someone who can help. Or you can do the Reply – Answer method for as long
   as it takes. Most people do the latter although they are not usually thrown into
   a situation such as yours.
 *  Moderator [t-p](https://wordpress.org/support/users/t-p/)
 * (@t-p)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/warning-errors-10/#post-13223431)
 * Topic continued at [https://wordpress.org/support/topic/warning-errors-11/](https://wordpress.org/support/topic/warning-errors-11/)

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Warning Errors’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 3 participants
 * Last reply from: [t-p](https://wordpress.org/support/users/t-p/)
 * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/warning-errors-10/#post-13223431)
 * Status: not resolved

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