diff -r 563fd95a6efb -r 4daa22071d5d mercurial/hgweb/hgweb_mod.py
--- a/mercurial/hgweb/hgweb_mod.py	Sat Mar 10 19:57:08 2018 -0800
+++ b/mercurial/hgweb/hgweb_mod.py	Sat Mar 10 20:51:46 2018 -0800
@@ -404,7 +404,7 @@
                 # override easily enough.
                 res.status = '200 Script output follows'
                 res.headers['Content-Type'] = ctype
-                return getattr(webcommands, cmd)(rctx, wsgireq, rctx.tmpl)
+                return getattr(webcommands, cmd)(rctx)
 
         except (error.LookupError, error.RepoLookupError) as err:
             msg = pycompat.bytestr(err)