The node to advance to when there is an error in the application (e.g., a reference to an undefined node, variable, etc.).
This feature allows applications to fail more gracefully and to continue running in spite of errors.
When an error occurs, a description of the error is automatically written into the variable ERROR_MSG, which can be displayed or evaluated for logging or other purposes.
Child of: <settings>
Parent of: Nothing
Example:
<on_error node="error_node"/>