I get the below error message when I go to the manage add on page.

java.util.concurrent.ExecutionException: java.lang.NullPointerException

3 answers

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java.lang.NullPointerException is one of the most generic Java error messages you can get.

You'll need to read the application's log file to find the root cause of the error.

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Some of the most usual causes for null pointer exceptions on Confluence are described on this below article:
https://confluence.atlassian.com/display/CONFKB/NullPointerException+When+Browsing+to+Confluence

However, just like Nic stated, you'll need to analyse the application logs in order to identify what is in fact causing the issue. In case you need further assistance with this, I suggest you raise a support ticket at https://support.atlassian.com/

 Regards,
LM 

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Usually the culprit of your error can be found in the stack trace above the java.util.concurrent.ExecutionException: java.lang.NullPointerException.

Cheers,

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