spiece.model file is not present upon saving the model after training .
I used this
python run_seq2seq_qa.py --model_name_or_path t5-small --dataset_name squad_v2 --context_column context --question_column question --answer_column answers --do_train --do_eval --per_device_train_batch_size 12 --learning_rate 3e-5 --num_train_epochs 1 --max_seq_length 384 --doc_stride 128 --output_dir /trained_model/debug_seq2seq_squad/ --max_train_samples 50 --max_eval_samples 50
to run the run_seq2seq_qa.py from transformers git examples but cannot be used for inferencing.