some problem fixed

app.py

@@ -24,7 +24,7 @@ def get_pdf_text_chunks(pdf_text):
 
 def create_vector_store(target_source_chunks):
     embeddings = HuggingFaceEmbeddings(model_name=embeddings_model_name)
-    db = Chroma.from_texts(documents=target_source_chunks, persist_directory=persist_directory, embedding=embeddings)
+    db = Chroma.from_texts(texts=target_source_chunks, persist_directory=persist_directory, embedding=embeddings)
     db.persist()
     return db