During rendering, inconsistencies may be detected in the PDF or
in the environment.
For example, if a PDF contains a corrupt image, then it may not
be possible to display it. If a PDF contains a reference to a font
which is not on the current system, then a font substitution may be
ABCpdf will do its best to complete the render even if errors or
inconsistencies are found. However, it will log these type of
issues and make the log available via this property. This can be
useful for debugging purposes.