Chart Macro Fails to Render due to Problem in Class Initialisation
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
Confluence is unable to render charts from Chart Macro and displays this error message:
1
Error formatting macro: chart:java.lang.NoClassDefFoundError: Could not initialize class org.jfree.chart.JFreeChartCause
There is a problem in utilising JFreeChart, the library used by Confluence to generate charts as an image.
Resolution
If Confluence is running on Unix/Linux, make sure the environment has X11 Support.
Otherwise, make sure Confluence runs on an Oracle JDK. OpenJDK is known to cause this problem. See our Supported Platforms.
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