If your Pie Chart does not generate from the Bundle, it is most likely that there is a section with a negative value which is preventing the whole chart from generating.
Identify the Account Tree and Business Unit Tree the Chart is running on
Run a P&L report with the same criteria e.g. Account Tree A / Business Unit Tree X / Income accounts only
This will give you the underlying data to review
To allow the report to generate, data will need to be grouped to result in a positive value for all reported sections.