Right click on the MyGuide icon and select "Manage extensions"
Switch toggle button to right to enable "Developer mode"
Click on "background page"
A new window will appear for debugging
Select "Network", then select "XHR" and select the checkbox to "Disable cache"
Perform the action that is causing the error. In this example a step is not being saved
This "DevTolls" page will show any errors that have occurred in red
Select the error to see the response and error messages