v0.3.31-fix3

Major Fixes

• Fix: Hybrid search recall fails when the chosen dataset contains no valid documents.

Important Notice

Before upgrading to 0.3.31, please ensure that all steps outlined in the Important Upgrade Notice for the 0.3.31 release are completed: https://github.com/langgenius/dify/releases/tag/0.3.31

What's Changed

• fix sql transaction error in statistic API by @waltcow in #1586
• fix: chat token spent info style by @zxhlyh in #1597
• fix weaviate hybrid search issue by @JohnJyong in #1600
• feat: optimize db connections in thread by @takatost in #1601
• fix: hybrid search when document is none by @JohnJyong in #1603
• Fix/multi thread parameter by @JohnJyong in #1604
• feat: bump version to 0.3.31-fix3 by @takatost in #1606

New Contributors

• @waltcow made their first contribution in #1586

Full Changelog: 0.3.31-fix2...0.3.31-fix3