diff -r c7ec55cbd35a -r a6e7dd8bac36 runtime/WampClient.py
--- a/runtime/WampClient.py	Sat Dec 09 01:01:48 2023 +0100
+++ b/runtime/WampClient.py	Sat Dec 09 01:03:43 2023 +0100
@@ -443,7 +443,7 @@
 
 def getDownloadUrl(ctx, argument):
     if lastKnownConfig is not None:
-        return url.URL.fromConstr(ctx).\
+        return url.URL.fromContext(ctx).\
             child(WAMP_SECRET_URL).\
             child(lastKnownConfig["ID"] + ".secret")