Title: Duplicator Error Step 3
Last modified: May 3, 2019

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# Duplicator Error Step 3

 *  Resolved [techepet](https://wordpress.org/support/users/techepet/)
 * (@techepet)
 * [7 years, 1 month ago](https://wordpress.org/support/topic/duplicator-error-step-3/)
 * When running the installer I get the below error on Step 3
    Server Code: 500 
   Status: Internal Server Error Response: INSTALL ERROR! [PHP ERR][FATAL] MSG:Uncaught
   Error: Call to undefined function mb_strimwidth() in /var/www/html/dup-installer/
   classes/class.engine.php:357 Stack trace: #0 /var/www/html/dup-installer/ctrls/
   ctrl.s3.php(222): DUPX_UpdateEngine::load(Object(mysqli), Array, Array, 0) #1/
   var/www/html/dup-installer/main.installer.php(248): require_once(‘/var/www/html/
   d…’) #2 {main} thrown [CODE:1|FILE:/var/www/html/dup-installer/classes/class.
   engine.php|LINE:357]
 * Anyone can assist? thanks!

Viewing 8 replies - 1 through 8 (of 8 total)

 *  [Cory Lamle](https://wordpress.org/support/users/corylamleorg/)
 * (@corylamleorg)
 * [7 years, 1 month ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-11494173)
 * Hey [@techepet](https://wordpress.org/support/users/techepet/)
 * I would contact your host and ask them whey they don’t support this built-in 
   PHP method.
    [https://www.php.net/manual/en/function.mb-strimwidth.php](https://www.php.net/manual/en/function.mb-strimwidth.php)
 * Basically, they don’t have PHP set up correctly…
 * Thanks~
 *  Thread Starter [techepet](https://wordpress.org/support/users/techepet/)
 * (@techepet)
 * [7 years, 1 month ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-11494185)
 * Well, guess it was a permission issue, because I just gave full permission over
   the directory, run the script, went flawless and then changed permission back
   to normal apache permission, site working perfectly now. Thanks anyhow.
 *  [Cory Lamle](https://wordpress.org/support/users/corylamleorg/)
 * (@corylamleorg)
 * [7 years, 1 month ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-11494197)
 * Thanks for the update!
 *  [haushinka](https://wordpress.org/support/users/haushinka/)
 * (@haushinka)
 * [7 years ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-11554842)
 * Dear [@techepet](https://wordpress.org/support/users/techepet/)
    I am facing 
   the same issue as you did. I followed your steps but it does not seem to work,
   can you please describe what exactly you did?
 * Thanks a lot in advance
 *  Thread Starter [techepet](https://wordpress.org/support/users/techepet/)
 * (@techepet)
 * [7 years ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-11555141)
 * [@haushinka](https://wordpress.org/support/users/haushinka/) I changed the wordpress
   install directory permission to 777 just for the time needed to run the script,
   once it finished i changed all permissions back to normal WordPress permissioning.
 * [https://www.wpbeginner.com/beginners-guide/how-to-fix-file-and-folder-permissions-error-in-wordpress/](https://www.wpbeginner.com/beginners-guide/how-to-fix-file-and-folder-permissions-error-in-wordpress/)
 *  [simonfishley](https://wordpress.org/support/users/simonfishley/)
 * (@simonfishley)
 * [7 years ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-11583725)
 * For anyone else who runs into this, the issue is due to a missing PHP modules,
   not permissions.
 * You just need to install – or ask your host to install – php-mbstring
 *  [clwill](https://wordpress.org/support/users/clwill/)
 * (@clwill)
 * [6 years, 7 months ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-12025568)
 * I second [@simonfishley](https://wordpress.org/support/users/simonfishley/) and
   his response. I had this error, installing the php-mbstring package solved the
   problem. Thank you [@simonfishley](https://wordpress.org/support/users/simonfishley/)!
 *  [Francis Mukobi](https://wordpress.org/support/users/victorycck/)
 * (@victorycck)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-12536899)
 * simonfishley and his response worked for me too. installing the php-mbstring 
   package does the trick

Viewing 8 replies - 1 through 8 (of 8 total)

The topic ‘Duplicator Error Step 3’ is closed to new replies.

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 * Last reply from: [Francis Mukobi](https://wordpress.org/support/users/victorycck/)
 * Last activity: [6 years, 2 months ago](https://wordpress.org/support/topic/duplicator-error-step-3/#post-12536899)
 * Status: resolved