fix qwen3moe eplb prefill bug (#6617)

python/sglang/srt/model_executor/expert_location_updater.py

@@ -12,6 +12,7 @@
 # limitations under the License.
 # ==============================================================================
 import logging
+from datetime import timedelta
 from typing import Dict, List, Tuple
 
 import torch
@@ -340,7 +341,7 @@ def update_expert_weights_single_layer(
         reqs = torch.distributed.batch_isend_irecv(p2p_ops)
         try:
             for req in reqs:
-                req.wait(timeout=30)
+                req.wait(timeout=timedelta(seconds=30))
         except RuntimeError:
             logger.error(
                 f"Context: {rank=} {old_physical_to_logical_map=} {new_physical_to_logical_map=} {num_local_physical_experts=} {num_gpu_per_node=}"