fix upload documents

app.py

@@ -190,8 +190,8 @@ def upload_documents(files):
     for file in files:  
         loader = UnstructuredFileLoader(file.name)  
         documents = loader.load()  
-        add_documents_to_chroma(chroma_client, chroma_collection, documents, embedding_function)  
-    return "Documents uploaded and processed successfully!" 
+        add_documents_to_chroma(documents, embedding_function)  
+    return "Documents uploaded and processed successfully!"  
   
 def query_documents(query):  
     results = query_chroma(query)  

globalvars.py

@@ -25,6 +25,7 @@ tasks = {
         'NQ': 'Given a question, retrieve Wikipedia passages that answer the question',
         'QuoraRetrieval': 'Given a question, retrieve questions that are semantically equivalent to the given question',
         'SCIDOCS': 'Given a scientific paper title, retrieve paper abstracts that are cited by the given paper',
+        'DEFAULT': 'Given a query, retrieve relevant entity descriptions from DBPedia',
 }
 
 intention_prompt= """