Receiving the following issue after install "Exception #0 (Magento\Framework\Exception\LocalizedException): Invalid block type: Owebia\AdvancedShipping\Block\System\Config\Form\Field\About" · Issue #88 · owebia/magento2-module-advanced-shipping · GitHub
![magento 1.9 - Mage_Core_Exception: Invalid block type: Mage_Adminhtml_Block_Sales_Order_Totals_Subtotal - Magento Stack Exchange magento 1.9 - Mage_Core_Exception: Invalid block type: Mage_Adminhtml_Block_Sales_Order_Totals_Subtotal - Magento Stack Exchange](https://i.stack.imgur.com/tcNvy.png)
magento 1.9 - Mage_Core_Exception: Invalid block type: Mage_Adminhtml_Block_Sales_Order_Totals_Subtotal - Magento Stack Exchange
![layout - Custom Block “Invalid Block Type”, even-though everything looks correct - Magento Stack Exchange layout - Custom Block “Invalid Block Type”, even-though everything looks correct - Magento Stack Exchange](https://i.stack.imgur.com/AC9Qy.png)