fix worker issue

Author: H-Shay

synapse/rest/__init__.py

@@ -145,7 +145,7 @@ def register_servlets(client_resource: HttpServer, hs: "HomeServer") -> None:
         password_policy.register_servlets(hs, client_resource)
         knock.register_servlets(hs, client_resource)
         appservice_ping.register_servlets(hs, client_resource)
-        if is_main_process:
+        if hs.config.server.enable_media_repo:
             from synapse.rest.client import media
 
             media.register_servlets(hs, client_resource)