NullPointerException when Sending a Test Email
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
The following message appears in the logs:
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java.lang.NullPointerException
at java.lang.String.concat(String.java:1827)
at com.sun.activation.registries.MailcapFile.parseLine(MailcapFile.java:235)
at com.sun.activation.registries.MailcapFile.parse(MailcapFile.java:197)
at com.sun.activation.registries.MailcapFile.createMailcapHash(MailcapFile.java:157)
at com.sun.activation.registries.MailcapFile.<init>(MailcapFile.java:40)
Cause
Something in the installation of Ubuntu puts an invalid line in the $HOME/.mailcap file.
Resolution
Delete the '-e' from $HOME/.mailcap.
Updated on April 8, 2025
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