diff --git a/drizzle/meta/0002_snapshot.json b/drizzle/meta/0002_snapshot.json
index 2890f66..feb820c 100644
--- a/drizzle/meta/0002_snapshot.json
+++ b/drizzle/meta/0002_snapshot.json
@@ -28,8 +28,8 @@
           "notNull": true,
           "autoincrement": false
         },
-        "focusMode": {
-          "name": "focusMode",
+        "sources": {
+          "name": "sources",
           "type": "text",
           "primaryKey": false,
           "notNull": true,
diff --git a/src/lib/agents/search/widgets/calculationWidget.ts b/src/lib/agents/search/widgets/calculationWidget.ts
index 0026741..3e28015 100644
--- a/src/lib/agents/search/widgets/calculationWidget.ts
+++ b/src/lib/agents/search/widgets/calculationWidget.ts
@@ -51,6 +51,10 @@ const calculationWidget: Widget = {
       schema,
     });
 
+    if (output.notPresent) {
+      return;
+    }
+
     const result = mathEval(output.expression);
 
     return {