diff -r 4e9b39033d3f -r 86f9b25d750b mercurial/hgweb/webcommands.py
--- a/mercurial/hgweb/webcommands.py	Tue Jul 21 13:41:26 2020 -0700
+++ b/mercurial/hgweb/webcommands.py	Tue Jul 21 13:36:48 2020 -0700
@@ -1320,9 +1320,7 @@
     static = web.config(b"web", b"static", untrusted=False)
     if not static:
         tp = web.templatepath or templater.templatedir()
-        if isinstance(tp, bytes):
-            tp = [tp]
-        static = [os.path.join(p, b'static') for p in tp]
+        static = [os.path.join(tp, b'static')]
 
     staticfile(static, fname, web.res)
     return web.res.sendresponse()