Attachment upload/preview issue: Scheduled job with ID 'conversionLoader' failed due to binary incompatibilities
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
Summary
Problem
While uploading an attachment in Confluence and using a View-file macro, it gives below error message
Error rendering macro 'view-file'
Could not initialize class com.atlassian.plugins.conversion.convert.image.SlidesConverter
The following errors occur when trying to load the package upon the last startup of Confluence appears in the atlassian-confluence.log
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2019-05-02 15:36:45,794 ERROR [Caesium-1-2] [atlassian.scheduler.core.JobLauncher] launchAndBuildResponse Scheduled job with ID 'conversionLoader' failed due to binary incompatibilities
-- referer: http://localhost:8099/setup/setupdata-start.action | url: /setup/setupdata.action | traceId: 8576b486aef5fb20 | userName: anonymous | action: setupdata
java.lang.ExceptionInInitializerError
Caused by: class com.aspose.slides.exceptions.ArgumentException: Culture Name: en-HK is not a supported culture
java.lang.Thread.run(Thread.java:748)
at com.aspose.slides.internal.ep.if.if(Unknown Source)
at com.aspose.slides.internal.ep.if.<init>(Unknown Source)
at com.aspose.slides.internal.ep.if.do(Unknown Source)
We also see below errors in the atlassian-confluence.log
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java.lang.ExceptionInInitializerError: Exception java.lang.NoClassDefFoundError: Could not initialize class com.atlassian.plugins.conversion.convert.image.AbstractConverter [in thread "http-nio-8090-exec-14"]
at com.benryan.components.DefaultSlideCacheManager.queueNewPptConversion(DefaultSlideCacheManager.java:281)
at com.benryan.components.DefaultSlideCacheManager.queueNewConversion(DefaultSlideCacheManager.java:252)
at com.benryan.components.DefaultSlideCacheManager.getFuture(DefaultSlideCacheManager.java:142)
at com.benryan.components.DefaultSlideCacheManager.getFuture(DefaultSlideCacheManager.java:129)
.
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Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.atlassian.plugins.conversion.convert.image.SlidesConverter
at com.benryan.components.DefaultSlideCacheManager.queueNewPptConversion(DefaultSlideCacheManager.java:281)
at com.benryan.components.DefaultSlideCacheManager.queueNewConversion(DefaultSlideCacheManager.java:252)
at com.benryan.components.DefaultSlideCacheManager.getFuture(DefaultSlideCacheManager.java:142)
at com.benryan.components.DefaultSlideCacheManager.getFuture(DefaultSlideCacheManager.java:129)
Diagnosis
Check the configuration in Confluence UI by doing the following:
Navigate to General Configuration > System Information
Look for the following and check if it is set as {{user.language=zh}} and {{user.country=HK}}:

Cause
The 'System Locale' were not configured properly. From the above error, it seems like the settings are configured as:
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-Duser.language=en
-Duser.country=HK
Solution
Resolution
The correct language localization should be zh-HK as per stated in this JDK 8 Supported Locales or JDK 17 Supported Locales
In order to change the locale settings the recommended way is to add the additional arguments user.language
and user.country
to the JVM parameters. The details steps for adding the parameters is explained in this article - Configuring System Properties
Example parameter for the above error:
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-Duser.language=zh -Duser.country=HK
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