Title: Coding problems have suddenly appeared
Last modified: August 21, 2016

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# Coding problems have suddenly appeared

 *  [Rob Gilhooly](https://wordpress.org/support/users/rob-gilhooly/)
 * (@rob-gilhooly)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/coding-problems-have-suddenly-appeared/)
 * Quite recently a warning message began to appear at the top of my word press 
   homepage
    Warning:join()[function.join]: Invalid arguments passed in /home/japan30/
   public_html/roblog/wp-includes/post-template.php on line 394 class=””> To begin
   with that was all that appeared, but at the advice of my hosting service I updated
   all plugins and subsequently all pages had the message at the top. Now, today
   when I checked it seems all of the pages have lost coding relating to page design.
   The site is at the following URL [http://roblog.japanphotojournalist.com](http://roblog.japanphotojournalist.com)
   I would be very grateful for advice on how to solve this, preferably one that
   is stress-free and speedy! Thank you in advance RG

Viewing 1 replies (of 1 total)

 *  [Anshu Verma](https://wordpress.org/support/users/averma/)
 * (@averma)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/coding-problems-have-suddenly-appeared/#post-4702560)
 * Have you tried:
    - deactivating all plugins (yes, all) to see if this resolves the problem. If
      this works, re-activate the plugins one by one until you find the problematic
      plugin(s). If you can’t get into your admin dashboard, try resetting the plugins
      folder by FTP or PhpMyAdmin (read [“How to deactivate all plugins when you can’t log in to wp-admin”](http://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F)
      if you need help). Sometimes, an apparently inactive plugin can still cause
      problems.
    - switching to the Twenty Fourteen theme to rule out any theme-specific problems.
      If you can’t log in to change themes, you can remove the theme folders via
      FTP so the only one is `twentyfourteen`. That will force your site to use 
      it.

Viewing 1 replies (of 1 total)

The topic ‘Coding problems have suddenly appeared’ is closed to new replies.

## Tags

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [Anshu Verma](https://wordpress.org/support/users/averma/)
 * Last activity: [12 years, 4 months ago](https://wordpress.org/support/topic/coding-problems-have-suddenly-appeared/#post-4702560)
 * Status: not resolved

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