I restored the XML backup file from JIRA 8.0.0 to the 8.22 version environment. The restore was successful and JIRA could start and access normally, but I couldn't see the attachments in the issues. Then I copied the attachments from the 8.0.0 environment to the corresponding attachment directory of the new 8.22 version environment, JIRA failed to restart and reported an error: "Startup check failed, jira will be locked"