QueryEditors: include error when no data is returned (#23632)

public/app/features/dashboard/panel_editor/QueryEditorRow.test.ts

@@ -43,4 +43,17 @@ describe('filterPanelDataToQuery', () => {
     expect(panelData?.series[0].refId).toBe('B');
     expect(panelData?.series[0].refId).toBe('B');
     expect(panelData?.error!.refId).toBe('B');
     expect(panelData?.error!.refId).toBe('B');
   });
   });
+
+  it('should include errors when missing data', () => {
+    const withError = ({
+      series: [],
+      error: {
+        message: 'Error!!',
+      },
+    } as unknown) as PanelData;
+
+    const panelData = filterPanelDataToQuery(withError, 'B');
+    expect(panelData.state).toBe(LoadingState.Error);
+    expect(panelData.error).toBe(withError.error);
+  });
 });
 });

public/app/features/dashboard/panel_editor/QueryEditorRow.tsx

@@ -335,6 +335,13 @@ export function filterPanelDataToQuery(data: PanelData, refId: string): PanelDat
 
 
   // No matching series
   // No matching series
   if (!series.length) {
   if (!series.length) {
+    // If there was an error with no data, pass it to the QueryEditors
+    if (data.error && !data.series.length) {
+      return {
+        ...data,
+        state: LoadingState.Error,
+      };
+    }
     return undefined;
     return undefined;
   }
   }