mgr/dashboard: Fix cherrypy static content URL prefix config

Fixes: https://tracker.ceph.com/issues/25067
Signed-off-by: Ricardo Marques <rimarques@suse.com>

diff --git a/src/pybind/mgr/dashboard/module.py b/src/pybind/mgr/dashboard/module.py
index 65454eb396dad6c907a573c2119ace10c76fec14..010339f0b07e39702c2f9c308d6620482cccdd8e 100644 (file)
--- a/src/pybind/mgr/dashboard/module.py
+++ b/src/pybind/mgr/dashboard/module.py
@@ -289,7 +289,7 @@ class Module(MgrModule, SSLCherryPyConfig):
         mapper, parent_urls = generate_routes(self.url_prefix)
 
         config = {
-            '{}/'.format(self.url_prefix): {
+            self.url_prefix or '/': {
                 'tools.staticdir.on': True,
                 'tools.staticdir.dir': self.get_frontend_path(),
                 'tools.staticdir.index': 'index.html'