Windows support for LayoutXLM model (#1489)

Author: yingyibiao

paddlenlp/transformers/layoutxlm/modeling.py

@@ -1083,7 +1083,8 @@ def forward(self, hidden_states, entities, relations):
         for b in range(batch_size):
             head_entities = paddle.to_tensor(relations[b]["head"])
             tail_entities = paddle.to_tensor(relations[b]["tail"])
-            relation_labels = paddle.to_tensor(relations[b]["label"])
+            relation_labels = paddle.to_tensor(
+                relations[b]["label"], dtype='int64')
             entities_start_index = paddle.to_tensor(entities[b]["start"])
             entities_labels = paddle.to_tensor(entities[b]["label"])
             head_index = entities_start_index[head_entities]