If you encounter the following error during the installation or configuration of the Shiptheory extension in Magento 2:


"PHP Fatal error:  Uncaught Error: Cannot instantiate interface Shiptheory\Shippingx\Api\ApiInterface in ..."


This error typically occurs because the required dependencies for the extension have not been properly configured.


Resolution Steps


To resolve this issue, follow these steps: 

  1. Log in to your server via SSH.
  2. Navigate to the root directory of your Magento 2 installation.
  3. Run the following commands in sequence:
- php bin/magneto setup:upgrade
- php bin/magneto setup:di:upgrade
  • setup:upgrade: Ensures that the database schema and data are updated for any new extensions.
  • setup:di:compile: Generates the necessary dependency injection (DI) classes for Magento to correctly instantiate objects.