Hi @RahmanIT, 👋
This usually happens when the backup file is large and the download times out mid-way.Try downloading again using a stable connection (or with a tool like wget that supports resume).You can also generate a smaller backup first (without attachments) to confirm it completes properly.
wget
If the issue persists, contact Atlassian Support →🔗 https://support.atlassian.com/contact/#/
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