Update app.py

app.py

@@ -90,8 +90,9 @@ course_material = st.file_uploader("or Upload your own pdf", type="pdf")
 
 if st.session_state != "":
     try:
-        doc_retriever = get_retriever(course_material)
-        st.success("File loading successful, vector db initialize")
+        if st.button("load"):
+            doc_retriever = get_retriever(course_material)
+            st.success("File loading successful, vector db initialize")
     except:
         st.error("Upload your file")