Fix tempe file issue

apps/researcher.py

@@ -4,6 +4,7 @@ import pandas as pd
 import streamlit as st
 import leafmap.foliumap as leafmap
 import plotly.express as px
+from leafmap.common import temp_file_path
 
 if "dsl" not in st.session_state:
     st.session_state["dsl"] = scholarpy.Dsl()
@@ -20,7 +21,7 @@ def json_to_df(json_data, transpose=False):
         if transpose:
             df = df.transpose()
 
-        out_csv = leafmap.temp_file_path(".csv")
+        out_csv = temp_file_path(".csv")
         df.to_csv(out_csv, index=transpose)
         df = pd.read_csv(out_csv)
         os.remove(out_csv)