I want to update our Confluence, so I made a new machine and installed Confluence 5.8.2. I read that it is possible.
During the Setup I tried to Restore the backupfile from our Confluence (version 5.1.3), but the restore failed because of:
Invocation of method 'isShowSignUp' in class com.atlassian.confluence.user.actions.LoginAction threw exception java.lang.NullPointerException: Application cannot be null at /login.vm[line 6, column 28]
I also tried to make an empty installation and create the user "admin" and then restore the file, but I get the same error.
When I get the error the whole installation isn't working any more and I have to uninstall and install Confluence again.
I also want to try if Confluence installs the needed Plugins with the restore on its own.
I hope you can help me.
When you wish to Upgrade confluence It is always a good practice to upgrade existing installation rather than restoring back up file.
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