From c3db031deca82613ea566145b662238c56ab03a7 Mon Sep 17 00:00:00 2001
From: sophiamersmann <sophia.mersmann1@gmail.com>
Date: Mon, 30 Oct 2023 09:58:31 +0000
Subject: [PATCH] fix: guard against an empty list of tables

---
 .../grapher/src/stackedCharts/AbstractStackedChart.tsx   | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/@ourworldindata/grapher/src/stackedCharts/AbstractStackedChart.tsx b/packages/@ourworldindata/grapher/src/stackedCharts/AbstractStackedChart.tsx
index dc82f986683..284da9838e3 100644
--- a/packages/@ourworldindata/grapher/src/stackedCharts/AbstractStackedChart.tsx
+++ b/packages/@ourworldindata/grapher/src/stackedCharts/AbstractStackedChart.tsx
@@ -24,7 +24,11 @@ import {
     StackedRawSeries,
     StackedSeries,
 } from "./StackedConstants"
-import { OwidTable, CoreColumn } from "@ourworldindata/core-table"
+import {
+    OwidTable,
+    CoreColumn,
+    BlankOwidTable,
+} from "@ourworldindata/core-table"
 import {
     autoDetectSeriesStrategy,
     autoDetectYColumnSlugs,
@@ -103,6 +107,9 @@ export class AbstractStackedChart
                 .map((t: OwidTable) =>
                     t.dropRowsWithErrorValuesForAnyColumn(this.yColumnSlugs)
                 )
+
+            if (groupedByEntity.length === 0) return BlankOwidTable()
+
             table = groupedByEntity[0].concat(groupedByEntity.slice(1))
         }