使用slda输出为空

[stay-leave]

我的脚本如下：
#coding='utf-8'
import paddlehub as hub

slda_weibo = hub.Module(name="slda_weibo")

topic_dist = slda_weibo.infer_doc_topic_distribution("说点好对 一个ip地址这么容易被看见 真的需要帮助的时候又找不到了")
print(topic_dist)

输出日志如下：
[2022-06-24 00:30:28,337] [ WARNING] - The _initialize method in HubModule will soon be deprecated, you can use the init() to handle the initialization of the object
[2022-06-24 00:30:28,338] [ INFO] - Loading SLDA config.
[2022-06-24 00:30:28,575] [ INFO] - Loading word topic.
100%|████████████████████████████████████████████████████████████████████████| 175347/175347 [00:20<00:00, 8549.97it/s]
[2022-06-24 00:30:49,351] [ INFO] - Model Info: #num_topics=2000 #vocab_size=175347 alpha=0.100000 beta=0.010000
[2022-06-24 00:30:49,352] [ INFO] - Construct alias table for alias sampling method.
100%|████████████████████████████████████████████████████████████████████████| 175347/175347 [00:38<00:00, 4547.53it/s]
[2022-06-24 00:31:28,085] [ WARNING] - The _initialize method in HubModule will soon be deprecated, you can use the init() to handle the initialization of the object
W0624 00:31:28.119545 10160 analysis_predictor.cc:1694] Deprecated. Please use CreatePredictor instead.
[2022-06-24 00:31:31,333] [ INFO] - Finish initialization.
[]
请教大佬，我的最后输出结果怎么是空列表呢？该怎么改？