rm deprecated codes

translator/app.py

@@ -6,7 +6,7 @@
 import streamlit as st
 from langchain.chains import LLMChain
 from langchain.prompts import PromptTemplate
-from langchain_community.chat_models import ChatOllama
+from langchain_ollama import ChatOllama
 from utils import parse_config
 
 
@@ -42,7 +42,7 @@ class TranslatorApp:
             input_variables=['input_text', 'source_lang', 'target_lang', 'rule'],
             template=template
         )
-        return LLMChain(llm=llm, prompt=prompt)
+        return prompt | llm
 
     def run(self) -> None:
         """ Run the Streamlit app """
@@ -75,12 +75,12 @@ class TranslatorApp:
             with st.spinner('翻譯中...'):
 
                 source_lang, target_lang, rule = self._lang_directions[direction]
-                result = self._chain.run({
+                result = self._chain.invoke({
                     'input_text': input_text,
                     'source_lang': source_lang,
                     'target_lang': target_lang,
                     'rule': rule
-                }).strip()
+                }).content
 
             output_container.text_area(
                 label='Output',