OSError: Model file not found: ./output/AMI/stage_1/trainer_output/checkpoints/checkpoint_best.pt

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Hi author, regarding the Summ-N framework, I have some problems in the very first stage of training the model, at first, I configured the environments as required, but when I utilise the first dataset AMI script file.sh, i.e. go to the Summ-N-main main file, and run the bash scripts/run_AMI.sh command, it will always run to test mode in the run.py file and return an error. I always run the run.py file to the test mode, and return an error, but the default mode should not be the training mode, then I will run.py in the args.mode variable assigned to "train", which can enter the training mode, but there is the following problem: OSError: Model file not found:. /output/AMI/stage_1/trainer_output/checkpoints/checkpoint_best.pt, which means I'm missing the model weights file, but I'm not sure why it shows that the .pt file is missing, and I can't get the previous folder checkpoints to work either. open, it shows no files. I'd be grateful if the author could answer this question sometime, thanks!