[fix] gradio port

chatbot_graph.py

@@ -16,7 +16,7 @@ from answer_search import *
 class ChatBotGraph:
     def __init__(self):
         self.g = Graph(
-            'http://127.0.0.1:7476',
+            'http://127.0.0.1:7474',
             user="neo4j",
             password="neo4j")
         self.classifier = QuestionClassifier(self.g)
@@ -50,4 +50,4 @@ if __name__ == '__main__':
     # fn,inputs,outputs都是必填函数
     demo = gr.Interface(fn=handler.chat_main, inputs="text", outputs="text")
 
-    demo.launch(share=True)
+    demo.launch(share=True, server_name="0.0.0.0", server_port=7860)