Exercises G21

Description
Тhe application gives an error when trying to print using DMP

Precondition
The laser printer should be disabled

Steps to reproduce
1. Type something
2. Click on 'Print' button and wait for it to printing

Expected result
When the laser printer is disabled, the application tries to find the DMP and should print
The app should be printing when using the DMP

Actual result
When the application switches from a laser printer to DMP and starts using DMP, an "Error Message" appears on the screen