Fatal error: Uncaught Error: Call to undefined function get_user_by() in /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/database/Migrations/migration.v.1.0.29.php:46 Stack trace: #0 /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/database/Migrations/migration.v.1.0.29.php(21): SCCSP\SendCloud\Connected\Shipping\Database\Migrations\Migration_1_0_29->fix_sendcloud_user_email() #1 /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/database/class-migrator.php(47): SCCSP\SendCloud\Connected\Shipping\Database\Migrations\Migration_1_0_29->execute() #2 /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/includes/Utility/class-database.php(94): SCCSP\SendCloud\Connected\Shipping\Database\SCCSP_Migrator->execute() #3 /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/includes/Utility/class-database.php(34): SCCSP\SendCloud\Connected\Shipping\Utility\SCCSP_Database->do_update() #4 /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/includes/class-sendcloud.php(166): SCCSP\SendCloud\Connected\Shipping\Utility\SCCSP_Database->update(false) #5 /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/includes/class-sendcloud.php(130): SCCSP\SendCloud\Connected\Shipping\SCCSP_Sendcloud->initialize() #6 /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/sendcloud-connected-shipping.php(42): SCCSP\SendCloud\Connected\Shipping\SCCSP_Sendcloud::init('/home/admin/dom...') #7 /home/admin/domains/gsmschermkapot.nl/public_html/wp-settings.php(589): include_once('/home/admin/dom...') #8 /home/admin/domains/gsmschermkapot.nl/public_html/wp-config.php(124): require_once('/home/admin/dom...') #9 /home/admin/domains/gsmschermkapot.nl/public_html/wp-load.php(50): require_once('/home/admin/dom...') #10 /home/admin/domains/gsmschermkapot.nl/public_html/wp-blog-header.php(13): require_once('/home/admin/dom...') #11 /home/admin/domains/gsmschermkapot.nl/public_html/index.php(17): require('/home/admin/dom...') #12 {main} thrown in /home/admin/domains/gsmschermkapot.nl/public_html/wp-content/plugins/sendcloud-connected-shipping/database/Migrations/migration.v.1.0.29.php on line 46