Title: Plugin Activate Error
Last modified: December 13, 2018

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# Plugin Activate Error

 *  Resolved [alexshram](https://wordpress.org/support/users/alexshram/)
 * (@alexshram)
 * [7 years, 5 months ago](https://wordpress.org/support/topic/plugin-activate-error-2/)
 * Hello! When i activate this plugin i see this error.
 * Fatal error: Uncaught Error: Call to undefined function Illuminate\Support\mb_strpos()
   in /home/afiszaadmin/public_html/baza.afisza.pl/wp-content/plugins/wedevs-project-
   manager/vendor/illuminate/support/Str.php:94 Stack trace: #0 /home/afiszaadmin/
   public_html/baza.afisza.pl/wp-content/plugins/wedevs-project-manager/vendor/illuminate/
   database/Query/Builder.php(535): Illuminate\Support\Str::contains(‘key’, ‘->’)#
   1 /home/afiszaadmin/public_html/baza.afisza.pl/wp-content/plugins/wedevs-project-
   manager/vendor/illuminate/database/Eloquent/Builder.php(211): Illuminate\Database\
   Query\Builder->where(‘key’, ‘=’) #2 /home/afiszaadmin/public_html/baza.afisza.
   pl/wp-content/plugins/wedevs-project-manager/vendor/illuminate/database/Eloquent/
   Model.php(1374): Illuminate\Database\Eloquent\Builder->where(‘key’, ‘managing_capabi…’)#
   3 /home/afiszaadmin/public_html/baza.afisza.pl/wp-content/plugins/wedevs-project-
   manager/vendor/illuminate/database/Eloquent/Model.php(1386): Illuminate\Database\
   Eloquent\Model->__call(‘where’, Array) #4 /home in /home/afiszaadmin/public_html/
   baza.afisza.pl/wp-content/plugins/wedevs-project-manager/vendor/illuminate/support/
   Str.php on line 94

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

 *  [Nazmul Hassan](https://wordpress.org/support/users/nazmulhassann20/)
 * (@nazmulhassann20)
 * [7 years, 5 months ago](https://wordpress.org/support/topic/plugin-activate-error-2/#post-10982614)
 * Hello,
 * Thanks for your ticket. The problem is related to the server rather than the 
   plugin itself. If your server PHP version is 5.6 or later then kindly, ask your
   server admin to install `mb_strpos()` module for your server. After that everything
   will work fine 🙂
 * Let me know the update.
 *  Thread Starter [alexshram](https://wordpress.org/support/users/alexshram/)
 * (@alexshram)
 * [7 years, 5 months ago](https://wordpress.org/support/topic/plugin-activate-error-2/#post-10987833)
 * Hi, thank you for answer.
    Next problem with z-index in modal in user search 
   input. I send for you printscreen in FB message.
 *  [Nazmul Hassan](https://wordpress.org/support/users/nazmulhassann20/)
 * (@nazmulhassann20)
 * [7 years, 5 months ago](https://wordpress.org/support/topic/plugin-activate-error-2/#post-10987900)
 * Hello [@alexshram](https://wordpress.org/support/users/alexshram/),
 * You will be happy to know that we will release a new update within next week 
   which will solve the z-index issue.
 * Cheers!

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

The topic ‘Plugin Activate Error’ is closed to new replies.

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## Tags

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

 * 3 replies
 * 2 participants
 * Last reply from: [Nazmul Hassan](https://wordpress.org/support/users/nazmulhassann20/)
 * Last activity: [7 years, 5 months ago](https://wordpress.org/support/topic/plugin-activate-error-2/#post-10987900)
 * Status: resolved