XEMM v1 - Unhandled error in background task: 'DataFrame' object has no attribute 'append'

[rapcmia]

Describe the bug

When checking v1 XEMM strategy on development branch (dev-2.9.0), observed that when using status command and shortcut it does not display and returns unhandled error Unhandled error in background task: 'DataFrame' object has no attribute 'append'

Screen recording here

Steps to reproduce

1. Setup hummingbot + gateway
2. Setup XEMM v1 using papertrade (or CEX) as maker and DEX as taker
3. Start and observe behavior when using status command

Release version

dev-2.9.0

Type of installation

Source

Attach required files

08292025a.zip

[fengtality]

fixed in https://github.com/hummingbot/hummingbot/pull/7829