From e585e980078e5d997d40ce56da7dbb65f417ef20 Mon Sep 17 00:00:00 2001
From: Nicholas Brown <znicholasbrown@gmail.com>
Date: Thu, 11 Jan 2024 18:18:23 -0500
Subject: [PATCH] Bugfix: Missing `UI_SERVE_BASE_URL` lead to incorrect asset
 urls (#11628)

---
 src/prefect/server/api/server.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/prefect/server/api/server.py b/src/prefect/server/api/server.py
index 020c821dd1b2..912ad5efaa4f 100644
--- a/src/prefect/server/api/server.py
+++ b/src/prefect/server/api/server.py
@@ -370,7 +370,7 @@ def create_ui_static_subpath():
         replace_placeholder_string_in_files(
             prefect.__ui_static_subpath__,
             "/PREFECT_UI_SERVE_BASE_REPLACE_PLACEHOLDER",
-            base_url,
+            base_url.rstrip("/"),
         )
 
         # Create a file to indicate that the static files have been copied