Fix

cpsievert · cpsievert · commit 4de9a7f6215c · 2025-05-01T13:17:53.000-05:00
diff --git a/shiny/session/_session.py b/shiny/session/_session.py
@@ -1699,7 +1699,7 @@ def _read_output(self, id: str | None, key: str) -> str | None:
         self._check_current_context(f"output_{key}")
 
         if id is None:
-            id = self._session.current_output_id()
+            id = self._session._current_output_id()
 
         if id is None:
             raise ValueError(
