LayoutLM model cannot import name 'LayoutlmConfig'

[qiujiu123]

Describe
Model I am using (UniLM, MiniLM, LayoutLM ...):LayoutLM
When i using the code:
python run_seq_labeling.py --data_dir data
--model_type layoutlm
--model_name_or_path path/to/pretrained/model/directory
--do_lower_case
--max_seq_length 512
--do_train
--num_train_epochs 100.0
--logging_steps 10
--save_steps -1
--output_dir path/to/output/directory
--labels data/labels.txt
--per_gpu_train_batch_size 16
--per_gpu_eval_batch_size 16
--fp16
there is a problem :
File "run_seq_labeling.py", line 52, in
from layoutlm import FunsdDataset, LayoutlmConfig, LayoutlmForTokenClassification
ImportError: cannot import name 'LayoutlmConfig'
How to resolve it?