If you get this error when running bin / magento setup: upgrade command
Unable to apply data patch Magento\Paypal\Setup\Patch\Data\UpdateBmltoPayLater for module Magento_Paypal.
Original exception message: Notice:
Undefined offset: 1 in /vendor/magento/module-paypal/Setup/Patch/Data/UpdateBmltoPayLater.php on line 138
then you need to execute the following command in the Database
DELETE FROM `core_config_data` WHERE path="payment/paypal_express_bml/active";
To use our DHL Express Comprehensive Shipping for Magento® 2.x module, you must have a Site ID and Password that is not the same as your dhl.com login details.
To obtain a Site ID and Password, contact your DHL manager, he will make a request for an account to work with the DHL API.
If after running the command php bin / magento setup: di: compile your proxy class was not created, then a possible reason may be that your di.xml has line breaks in the "argument" field.
The program accepts print data in JSON format.
The WebSocket protocol is used to communicate between your application and el-Print.
API Url: ws://host:port/ws
host - domain or IP address specified in the program configuration.
port - port specified in the program configuration.
In this guide, you will learn how to properly configure el-Print printing software