diff --git a/app/Generator/Chart/Basic/ChartJsGenerator.php b/app/Generator/Chart/Basic/ChartJsGenerator.php
index 75d6f56074..6a8e160dcd 100644
--- a/app/Generator/Chart/Basic/ChartJsGenerator.php
+++ b/app/Generator/Chart/Basic/ChartJsGenerator.php
@@ -32,6 +32,7 @@ class ChartJsGenerator implements GeneratorInterface
 {
     /**
      * Constructor.
+     *
      * @codeCoverageIgnore
      */
     public function __construct()
@@ -118,7 +119,10 @@ class ChartJsGenerator implements GeneratorInterface
     public function multiSet(array $data): array
     {
         reset($data);
-        $first  = current($data);
+        $first = current($data);
+        if (!is_array($first)) {
+            return [];
+        }
         $labels = is_array($first['entries']) ? array_keys($first['entries']) : [];
 
         $chartData = [
@@ -186,7 +190,7 @@ class ChartJsGenerator implements GeneratorInterface
             $chartData['datasets'][0]['data'][]            = (float)app('steam')->positive((string)$value);
             $chartData['datasets'][0]['backgroundColor'][] = ChartColour::getColour($index);
 
-            $chartData['labels'][]                         = $key;
+            $chartData['labels'][] = $key;
             ++$index;
         }