To be able to output warnings, error and notice messages in our modules we have to use the following interface \Magento\Framework\Message\ManagerInterface.
The best way to use it is through Dependency Injection in the constructor as follows:
To be able to output warnings, error and notice messages in our modules we have to use the following interface \Magento\Framework\Message\ManagerInterface.
The best way to use it is through Dependency Injection in the constructor as follows: