diff --git a/ckanext/charts/fetchers.py b/ckanext/charts/fetchers.py
index 3f0bb93..5ea8ba0 100644
--- a/ckanext/charts/fetchers.py
+++ b/ckanext/charts/fetchers.py
@@ -71,7 +71,7 @@ def fetch_data(self) -> pd.DataFrame:
                 .select_from(sa.table(self.resource_id))
                 .limit(self.limit),
                 get_read_engine(),
-            ).drop(columns=["_id", "_full_text"])
+            ).drop(columns=["_id", "_full_text"], errors='ignore')
 
             if "date_time" in df.columns:
                 try: