From 092c9b9f29b510cdf190c2f14384d1af3a408668 Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Sat, 24 Dec 2022 23:58:00 +0100
Subject: [PATCH] be more defensive about array index

---
 Utils/Converter/Currency.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Utils/Converter/Currency.php b/Utils/Converter/Currency.php
index 6cbaaeb46..6a8b1bb7b 100755
--- a/Utils/Converter/Currency.php
+++ b/Utils/Converter/Currency.php
@@ -115,7 +115,12 @@ final class Currency
             self::$ecbCurrencies = [];
 
             foreach ($node as $key => $value) {
-                self::$ecbCurrencies[\strtoupper((string) $value->attributes()['currency'])] = (float) $value->attributes()['rate'];
+                /** @var null|array<string, string|int|float> $attributes */
+                if (($attributes = $value->attributes()) === null) {
+                    continue;
+                }
+
+                self::$ecbCurrencies[\strtoupper((string) ($attributes['currency']))] = (float) ($attributes['rate']);
             }
         } catch (\Throwable $t) {
             self::$ecbCurrencies = []; // @codeCoverageIgnore