#0 [internal function]: Magento\Framework\App\ErrorHandler->handler(2, 'array_merge(): ...', '/var/www/dev.ma...', 166, Array)
#1 /var/www/dev.marsmarket.be/vendor/shipperhq/module-shipper/src/Plugin/Checkout/ShippingInformationPlugin.php(166): array_merge(NULL, Array)
#2 /var/www/dev.marsmarket.be/vendor/magento/framework/Interception/Interceptor.php(135): ShipperHQ\Shipper\Plugin\Checkout\ShippingInformationPlugin->aroundSaveAddressInformation(Object(Magento\Checkout\Model\ShippingInformationManagement\Interceptor), Object(Closure), 194, Object(Magento\Checkout\Model\ShippingInformation))
#3 /var/www/dev.marsmarket.be/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Checkout\Model\ShippingInformationManagement\Interceptor->Magento\Framework\Interception\{closure}(194, Object(Magento\Checkout\Model\ShippingInformation))
#4 /var/www/dev.marsmarket.be/generated/code/Magento/Checkout/Model/ShippingInformationManagement/Interceptor.php(26): Magento\Checkout\Model\ShippingInformationManagement\Interceptor->___callPlugins('saveAddressInfo...', Array, NULL)
#5 [internal function]: Magento\Checkout\Model\ShippingInformationManagement\Interceptor->saveAddressInformation(194, Object(Magento\Checkout\Model\ShippingInformation))
#6 /var/www/dev.marsmarket.be/vendor/magento/module-webapi/Controller/Rest.php(330): call_user_func_array(Array, Array)
#7 /var/www/dev.marsmarket.be/vendor/magento/module-webapi/Controller/Rest.php(239): Magento\Webapi\Controller\Rest->processApiRequest()
#8 /var/www/dev.marsmarket.be/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Webapi\Controller\Rest->dispatch(Object(Magento\Framework\App\Request\Http))
#9 /var/www/dev.marsmarket.be/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Webapi\Controller\Rest\Interceptor->___callParent('dispatch', Array)
#10 /var/www/dev.marsmarket.be/vendor/magento/module-company/Plugin/Webapi/Controller/RestPlugin.php(84): Magento\Webapi\Controller\Rest\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#11 /var/www/dev.marsmarket.be/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Company\Plugin\Webapi\Controller\RestPlugin->aroundDispatch(Object(Magento\Webapi\Controller\Rest\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#12 /var/www/dev.marsmarket.be/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Webapi\Controller\Rest\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#13 /var/www/dev.marsmarket.be/generated/code/Magento/Webapi/Controller/Rest/Interceptor.php(26): Magento\Webapi\Controller\Rest\Interceptor->___callPlugins('dispatch', Array, Array)
#14 /var/www/dev.marsmarket.be/vendor/magento/framework/App/Http.php(135): Magento\Webapi\Controller\Rest\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#15 /var/www/dev.marsmarket.be/vendor/magento/framework/App/Bootstrap.php(256): Magento\Framework\App\Http->launch()
#16 /var/www/dev.marsmarket.be/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor))
#17 {main}