本地部署后, 访问不了http://localhost:8000/,拒绝连接,是什么原因啊

[viviliuwqhduhnwqihwqwudceygysjiwuwnn]

操作步骤:
1.ollama pull qwen2:7b 成功,http://localhost:11434/能输出Ollama is running.
2.PG数据库安装成功,自己测试数据库名,用户名,密码没有问题.
3.执行main.py输出是:
2024-07-30 15:05:08 - Loaded .env file
2024-07-30 15:05:14 - new registry table has been added: preprocessor_classes
2024-07-30 15:05:15 - new registry table has been added: adaptor_classes
2024-07-30 15:05:15 - new registry table has been added: lid_predictor_classes
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
I0000 00:00:1722323117.217673 22812 config.cc:230] gRPC experiments enabled: call_status_override_on_cancellation, event_engine_client, event_engine_dns, event_engine_listener, http2_stats_fix, monitoring_experiment, pick_first_new, trace_record_callops, work_serializer_clears_time_cache
请问这个输出是正确的吗,为啥打不开http://localhost:8000/这个网址,打印端口号占用情况8000端口没有任何东西,