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path: root/synapse/rest/media/v1/preview_url_resource.py
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-rw-r--r--synapse/rest/media/v1/preview_url_resource.py5
1 files changed, 3 insertions, 2 deletions
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index 9290d7946f..6b089689b4 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -40,8 +40,9 @@ from synapse.util.stringutils import random_string
 from synapse.util.caches.expiringcache import ExpiringCache
 from synapse.http.client import SpiderHttpClient
 from synapse.http.server import (
-    request_handler, respond_with_json_bytes,
+    respond_with_json_bytes,
     respond_with_json,
+    wrap_json_request_handler,
 )
 from synapse.util.async import ObservableDeferred
 from synapse.util.stringutils import is_ascii
@@ -90,7 +91,7 @@ class PreviewUrlResource(Resource):
         self._async_render_GET(request)
         return NOT_DONE_YET
 
-    @request_handler()
+    @wrap_json_request_handler
     @defer.inlineCallbacks
     def _async_render_GET(self, request):