Magento 2: System Configuration Error

Question

I cannot open my System Configuration in Magento 2.2.6, I have forced it back to Developer mode, error below & all installed modules.

I'm starting to pull my hair out. It worked on one system, I moved to the cloud and now this.

 1 exception(s):
Exception #0 (Exception): Notice: Undefined index: id in /opt/bitnami/nginx/html/vendor/magento/module-config/Model/Config/Structure/Element/Iterator.php on line 65
Exception #0 (Exception): Notice: Undefined index: id in /opt/bitnami/nginx/html/vendor/magento/module-config/Model/Config/Structure/Element/Iterator.php on line 65
#0 /opt/bitnami/nginx/html/vendor/magento/module-config/Model/Config/Structure/Element/Iterator.php(65): Magento\Framework\App\ErrorHandler->handler(8, 'Undefined index...', '/opt/bitnami/ng...', 65, Array)
#1 /opt/bitnami/nginx/html/vendor/magento/module-config/Model/Config/Structure.php(146): Magento\Config\Model\Config\Structure\Element\Iterator->setElements(Array, 'default')
#2 /opt/bitnami/nginx/html/generated/code/Magento/Config/Model/Config/Structure/Interceptor.php(24): Magento\Config\Model\Config\Structure->getTabs()
#3 /opt/bitnami/nginx/html/vendor/magento/module-config/Model/Config/Structure.php(209): Magento\Config\Model\Config\Structure\Interceptor->getTabs()
#4 /opt/bitnami/nginx/html/generated/code/Magento/Config/Model/Config/Structure/Interceptor.php(76): Magento\Config\Model\Config\Structure->getFirstSection()
#5 /opt/bitnami/nginx/html/vendor/magento/module-config/Controller/Adminhtml/System/AbstractConfig.php(60): Magento\Config\Model\Config\Structure\Interceptor->getFirstSection()
#6 /opt/bitnami/nginx/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Config\Controller\Adminhtml\System\AbstractConfig->dispatch(Object(Magento\Framework\App\Request\Http))
#7 /opt/bitnami/nginx/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Config\Controller\Adminhtml\System\Config\Index\Interceptor->___callParent('dispatch', Array)
#8 /opt/bitnami/nginx/html/vendor/magento/module-backend/App/Action/Plugin/Authentication.php(143): Magento\Config\Controller\Adminhtml\System\Config\Index\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#9 /opt/bitnami/nginx/html/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Backend\App\Action\Plugin\Authentication->aroundDispatch(Object(Magento\Config\Controller\Adminhtml\System\Config\Index\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#10 /opt/bitnami/nginx/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Config\Controller\Adminhtml\System\Config\Index\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#11 /opt/bitnami/nginx/html/generated/code/Magento/Config/Controller/Adminhtml/System/Config/Index/Interceptor.php(39): Magento\Config\Controller\Adminhtml\System\Config\Index\Interceptor->___callPlugins('dispatch', Array, NULL)
#12 /opt/bitnami/nginx/html/vendor/magento/framework/App/FrontController.php(55): Magento\Config\Controller\Adminhtml\System\Config\Index\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#13 /opt/bitnami/nginx/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController->dispatch(Object(Magento\Framework\App\Request\Http))
#14 /opt/bitnami/nginx/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor->___callParent('dispatch', Array)
#15 /opt/bitnami/nginx/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http))
#16 /opt/bitnami/nginx/html/generated/code/Magento/Framework/App/FrontController/Interceptor.php(26): Magento\Framework\App\FrontController\Interceptor->___callPlugins('dispatch', Array, Array)
#17 /opt/bitnami/nginx/html/vendor/magento/framework/App/Http.php(135): Magento\Framework\App\FrontController\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#18 /opt/bitnami/nginx/html/generated/code/Magento/Framework/App/Http/Interceptor.php(24): Magento\Framework\App\Http->launch()
#19 /opt/bitnami/nginx/html/vendor/magento/framework/App/Bootstrap.php(257): Magento\Framework\App\Http\Interceptor->launch()
#20 /opt/bitnami/nginx/html/pub/index.php(37): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor))
#21 {main}

Modules:

List of enabled modules:
 Magento_Store
 Magento_AdminNotification
 Magento_Directory
 Magento_Eav
 Magento_Theme
 Magento_Customer
 Magento_Backend
 Magento_Indexer
 Magento_Cms
 Magento_Catalog
 LitExtension_CartMigration
 LitExtension_Core
 Magento_Payment
 Magento_AdvancedPricingImportExport
 Magento_Config
 Magento_Authorization
 Magento_Quote
 Magento_Rule
 Magento_Backup
 Magento_SalesSequence
 Magento_Bundle
 Magento_BundleImportExport
 Magento_CacheInvalidate
 Magento_Sales
 Magento_CatalogInventory
 Magento_Security
 Magento_CatalogImportExport
 Magento_Checkout
 Magento_Cron
 Magento_Msrp
 Magento_Search
 Magento_CatalogUrlRewrite
 Magento_Widget
 Amazon_Core
 Magento_CheckoutAgreements
 Amazon_Login
 Magento_CmsUrlRewrite
 Magento_User
 Magento_ConfigurableImportExport
 Magento_ConfigurableProduct
 Magento_ConfigurableProductSales
 Magento_Contact
 Magento_Cookie
 Magento_Email
 Magento_CurrencySymbol
 Magento_Vault
 Magento_Integration
 Magento_CustomerImportExport
 Magento_Deploy
 Magento_Developer
 Magento_Dhl
 Magento_Paypal
 Magento_Downloadable
 Magento_ImportExport
 Klarna_Core
 Magento_Newsletter
 Magento_EncryptionKey
 Magento_Fedex
 Magento_GiftMessage
 Magento_GoogleAdwords
 Magento_GoogleAnalytics
 Magento_Ui
 Magento_GroupedImportExport
 Magento_GroupedProduct
 Magento_DownloadableImportExport
 Afterpay_Afterpay
 Magento_InstantPurchase
 Magento_Analytics
 Magento_LayeredNavigation
 Magento_Marketplace
 Magento_MediaStorage
 Magento_CatalogRule
 Magento_Multishipping
 Magento_NewRelicReporting
 Magento_ProductAlert
 Magento_OfflinePayments
 Magento_SalesRule
 Magento_PageCache
 Magento_Authorizenet
 Magento_Braintree
 Magento_Persistent
 Magento_Reports
 Magento_ProductVideo
 Klarna_Ordermanagement
 Magento_WishlistAnalytics
 Mageplaza_Smtp
 Rokanthemes_BestsellerProduct
 Rokanthemes_Blog
 Rokanthemes_Brand
 Rokanthemes_Categorytab
 Rokanthemes_CustomMenu
 Rokanthemes_Featuredpro
 Rokanthemes_LayeredAjax
 Rokanthemes_MostviewedProduct
 Rokanthemes_Newproduct
 Rokanthemes_Onsaleproduct
 Rokanthemes_OpCheckout
 Rokanthemes_PriceCountdown
 Rokanthemes_ProductTab
 Rokanthemes_QuickView
 Rokanthemes_RokanBase
 Rokanthemes_SearchbyCat
 Rokanthemes_SlideBanner
 Rokanthemes_Superdeals
 Rokanthemes_Testimonials
 Rokanthemes_Themeoption
 Rokanthemes_VerticalMenu
 Temando_Shipping
 Vertex_Tax
 Webkul_AccordionFaq
 Webkul_GiftCard
 Webkul_Pos
 **List of disabled modules:**
 Goeasyship_Shipping
 Mageplaza_Core

Answer 1

This error occurs if you try to add config settings (system.xml) to an non-existing config tab.

I guess it come from Mageplaza_Smtp, that tries to add config to Mageplaza config section and it fails because Mageplaza_Core is disabled.

Please enable Mageplaza_Core (or modify system.xml in Mageplaza_Smtp, to add config to another tag like "general")

• NoMansLand: I've actually removed Mageplaza_Core & Mageplaza_Smtp from the system..
• sv3n: @NoMansLand and error is still there after disabling both?
• NoMansLand: Yes, this is correct

Answer 2

OK Steps to resolve (MagePlaza_Core was disabled & removed, MagePlaza_SMTP was disabled & removed)

But their code didnt class it as "disabled" and "forgot" to tell Magento.

SO what did I do? Edited: /app/etc/config.php

Removed Mageplaza_Core & Mageplaza_SMTP Cleared Cache Flushed the Cache Deployed Static Content

Low & Behold here comes The Settings page!