If you're getting this error during YOLOv5 training:

tensorflow.python.framework.errors_impl.FailedPreconditionError: runs\train\<name> is not a directory

and you're using a folder path that contains non-ASCII characters, it's caused by TensorBoard (TensorFlow) failing to write logs in Unicode paths on Windows.

You can fix it by disabling TensorBoard logging in YOLOv5:

1. Open yolov5/utils/loggers/__init__.py

2. Find this line:

self.tb = SummaryWriter(str(s))

3. Replace it with:

self.tb = None 

This disables TensorBoard logging and prevents the crash.