Defines the debug level for the Genero Report Engine.
Values can be:
- 0: nothing
- 1: fatal only
- 2: fatal and error
- 3: fatal, error, and warning
- 4: fatal, error, warning, and info
- 5: fatal, error, warning, info, and debug
- 6: fatal, error, warning, info, debug, and trace
- 6+: all debug information