If you were using SigNoz from v0.37.x and prior, you will need to run the migration steps after upgrading to v0.38.1 - Docs
What's Changed
- Revert "fix: Logs UI: querybuildersearch: avoid emptying out query on sourceKeys update if tags are yet to be populated " by @YounixM in #4473
Full Changelog: v0.38.0...v0.38.1