Template has correct relaunch_url.

cellxgene_gateway/gateway.py

@@ -240,15 +240,14 @@ def do_GET_status_json():
 
 @app.route("/relaunch/<path:path>", methods=["GET"])
 def do_relaunch(path):
-    source_name = request.args.get("source") or default_item_source.name
+    source_name = request.args.get("source_name") or default_item_source.name
     source = matching_source(source_name)
     key = CacheKey.for_lookup(source, source.lookup(path))
     match = cache.check_entry(key)
     if not match is None:
         match.terminate()
-    qs = request.query_string.decode()
     return redirect(
-        key.view_url + (f"?{qs}" if len(qs) > 0 else ""),
+        key.view_url,
         code=302,
     )
 

cellxgene_gateway/templates/process_error.html

@@ -36,7 +36,7 @@
 <h4>Options</h4>
      Please choose one of the following, or use the back button:
      <ul>
-          <li><a href="{relaunch_url}">
+          <li><a href="{{ relaunch_url }}">
                     Attempt to relaunch the cellxgene server.
                </a></li>
           <li><a href="{{ url_for('filecrawl') }}">