KeyError: 'obj' During YOLOv9 Training Continuation

[4-alok]

I opened a fresh Google Colab and added the new best.pt from the previous session and want to continue training for another 100 epochs.

%cd {HOME}/yolov9
!python train.py \
--batch 16 --epochs 50 --img 640 --device 0 --min-items 0 --close-mosaic 15 \
--data {dataset.location}/data.yaml \
--evolve --resume '/content/yolov9/best (1).pt' \
--cfg models/detect/gelan-c.yaml \
--hyp hyp.scratch-high.yaml

Traceback (most recent call last):
File "/content/yolov9/train.py", line 634, in
main(opt)
File "/content/yolov9/train.py", line 604, in main
hyp[k] = max(hyp[k], v[1]) # lower limit
KeyError: 'obj'