Cannot find dpu.bit

[zzzhhh2025]

Environment:

• Kria KR260
• Ubuntu 22.04 Desktop

I followed instructions of Section 4.2 "Use Plain Python Code", but when I run the Python application python3 app_cifar10_tf2_resnet18.py, I got an error "Cannot find dpu.bit":

(pynq-venv) root@kria:~/jupyter_notebooks/pynq-dpu/cifar10_tf2# python3 app_cifar10_tf2_resnet18.py

ResNet18 CNN (pre-trained with ImageNet Dataset) fine-tuned to CIFAR10 Dataset, in TensorFlow2

Matplotlib is building the font cache; this may take a moment.
Traceback (most recent call last):
  File "/root/jupyter_notebooks/pynq-dpu/cifar10_tf2/app_cifar10_tf2_resnet18.py", line 126, in <module>
    overlay = DpuOverlay("dpu.bit")
  File "/usr/local/share/pynq-venv/lib/python3.10/site-packages/pynq_dpu/dpu.py", line 97, in __init__
    raise FileNotFoundError('Cannot find {}.'.format(bitfile_name))
FileNotFoundError: Cannot find dpu.bit.

So, where is "dpu.bit"? The terminal log of the installation is here. Thanks for help.