Fix metadata endpoint on sp-wsgi example

Signed-off-by: Ivan Kanakarakis <ivan.kanak@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/example/sp-wsgi/sp.py b/example/sp-wsgi/sp.py
index 485d802d..53478074 100755
--- a/example/sp-wsgi/sp.py
+++ b/example/sp-wsgi/sp.py
@@ -831,7 +831,7 @@ def metadata(environ, start_response):
             _args.sign,
         )
         start_response("200 OK", [("Content-Type", "text/xml")])
-        return metadata
+        return [metadata]
     except Exception as ex:
         logger.error("An error occured while creating metadata: %s", ex.message)
         return not_found(environ, start_response)