fix_bug_server (#3445)

* fix_bug_server

* fix_readme

PaddleNLP/Research/MRQA2019-D-NET/knowledge_distillation/README.md

@@ -30,7 +30,7 @@ models:
 
 ./data/pretrain_model/squad2_model: pretrain model(google squad2.0 model as pretrain model [Model Link](https://worksheets.codalab.org/worksheets/0x3852e60a51d2444680606556d404c657)).
 
-./saved_models/knowledge_distillation_model: baidu trained knowledge distillation model.
+./data/saved_models/knowledge_distillation_model: baidu trained knowledge distillation model.
 
 ## 3、Train and Predict
 Train and predict  knowledge distillation model

PaddleNLP/Research/MRQA2019-D-NET/multi_task_learning/README.md

@@ -9,6 +9,8 @@ We use PaddlePaddle PALM(multi-task Learning Library) to train MRQA2019 MRC mult
 git clone https://github.com/PaddlePaddle/PALM.git
 ```
 
+PALM user guide: [README.md](https://github.com/PaddlePaddle/PALM/blob/master/README.md)
+
 ### Environment
 - Python >= 2.7
 - cuda >= 9.0

PaddleNLP/Research/MRQA2019-D-NET/server/bert_server/pdnlp/nets/bert.py

@@ -22,8 +22,8 @@ import json
 import numpy as np
 import paddle.fluid as fluid
 
-from palm.nets.transformer_encoder import encoder as encoder
-from palm.nets.transformer_encoder import pre_process_layer as pre_process_layer
+from pdnlp.nets.transformer_encoder import encoder as encoder
+from pdnlp.nets.transformer_encoder import pre_process_layer as pre_process_layer
 
 
 class BertModel(object):