Update spark_startup.py

spark_startup.py

@@ -19,7 +19,7 @@ def _select_live_version(p: ProjectConfig) -> VersionConfig | None:
 
 
 def notify_startup():
-    spark_base = cfg.global_config.spark_endpoint.rstrip("/")  # ← 🟢 tek “/”
+    spark_base = str(cfg.global_config.spark_endpoint).rstrip("/")
     for p in cfg.projects:
         if not p.enabled:
             continue