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Confluence - Preview of PDF file attachment "There was a problem converting this attachment" Edited

Confluence - Preview of PDF file attachment "There was a problem converting this attachment"

Anyone know what would cause this. I am able to download it - it just will not appear via the PDF macro.

We are on the very latest version of Conflunece.




7 answers

1 accepted

0 votes
Answer accepted

Hey y'all! I expect we're running into this Confluence bug:

This bug affects versions of Confluence 7, prior to 7.2.0 and 7.1.1. To fix this, you can upgrade Confluence to 7.1.1 or 7.2.0. Or to workaround the issue, you can make use of the file previewer macro (Go to Insert > Files on the editor toolbar and select your file).

If this information does not make sense or you're on a fixed version and are still seeing the issue, please reach out to our support teams.

I am having the same issue. Happened after a recent security driven update.

Same problem here. Has been a confluence expert at our company trying to solve it but did not succeed. Advice was to copy the page, but it worked in the beginning but later when loading the pages the problem came back.

same problem since few weeks, with confluence 7.1.0

Same problem here since upgrade to confluence 7.1.1 and 7.1.2

Unfortunately we have the same problem with confluence 7.1.1.

With Confluence 7.3.0 this issue will be resolved. Please have a look at

We didn't have such issues with 7.1.1 but we've got it with 7.3.3. Any suggestions?

2020-03-20 13:32:11,904 ERROR [DefaultSlideCacheManager:thread-1] [com.benryan.components.AbstractConversionCacheManager] finish Error converting page, could not create slide
java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: com.atlassian.plugins.conversion.convert.image.AbstractConverter
Caused by: java.lang.NoClassDesfFoundError: com.atlassian.plugins.conversion.convert.image.AbstractConverter


Solution for this issue.

We are on 7.4.1 and usually this macro is working. Now I created a PDF with a Chrome add-on (FireShot) of a report page in Jira Upraise in order to show it in Confluence and run in the error as described above


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