### What problem does this PR solve?
Fix: Document Previewer is not working #9606
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Upload files in the chat box #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Send data to compare the performance of different models' answers
#3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Display a separate chat multi-model comparison page #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Feat: Show multiple chat boxes #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
