Update app.py

app.py

@@ -75,8 +75,8 @@ def read_document(file):
 
 def chat_document(file, question):
     content = str(read_document(file))
-    if len(content) > 64000:
-        content = content[:64000]
+    if len(content) > 32000:
+        content = content[:32000]
     content = content.replace('\n', ' ')
     content = content.replace('\r', ' ')
     content = content.replace('\t', ' ')