show warning only if no file

app.py

@@ -61,12 +61,12 @@ st.markdown(
 file_url = st.query_params.get("file_url", None)
 
 if not file_url:
-    st.warning(
-        "Please provide a KML or GeoJSON URL as a query parameter, e.g., `?file_url=<your_file_url>` or upload a file."
-    )
     file_url = st.file_uploader("Upload KML/GeoJSON file", type=["geojson", "kml", "shp"])
 
 if not file_url:
+    st.warning(
+        "Please provide a KML or GeoJSON URL as a query parameter, e.g., `?file_url=<your_file_url>` or upload a file."
+    )
     st.stop()
 
 if ("file_url" in st.session_state) and ("input_gdf" in st.session_state) and (st.session_state.file_url == file_url):