fix type

sycai · sycai · commit f0b1d1a37181 · 2025-09-15T21:30:06.000Z
diff --git a/bigframes/bigquery/_operations/ai.py b/bigframes/bigquery/_operations/ai.py
@@ -150,7 +150,7 @@ def _separate_context_and_series(
         return [None], [prompt]
 
     prompt_context: List[str | None] = []
-    series_list: List[series.Series] = []
+    series_list: List[series.Series | pd.Series] = []
 
     session = None
     for item in prompt:
