symfony
diff --git a/‎src/Symfony/Component/DomCrawler/Crawler.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/DomCrawler/Crawler.php
+13-4Lines changed: 13 additions & 4 deletions b/‎src/Symfony/Component/DomCrawler/Crawler.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/DomCrawler/Crawler.php
+13-4Lines changed: 13 additions & 4 deletions
@@ -1150,12 +1150,21 @@ protected function sibling(\DOMNode $node, string $siblingDir = 'nextSibling')
     }
 
     private function parseHtml5(string $htmlContent, string $charset = 'UTF-8'): \DOMDocument
+    {
+        if (!$this->supportsEncoding($charset)) {
+            $htmlContent = $this->convertToHtmlEntities($htmlContent, $charset);
+            $charset = 'UTF-8';
+        }
+
+        return $this->html5Parser->parse($htmlContent, ['encoding' => $charset]);
+    }
+
+    private function supportsEncoding(string $encoding): bool
     {
         try {
-            return $this->html5Parser->parse($htmlContent, ['encoding' => $charset]);
-        } catch (\ValueError $e) {
-            // Handle invalid encoding error
-            return $this->html5Parser->parse($this->convertToHtmlEntities($htmlContent, $charset));
+            return '' === @mb_convert_encoding('', 'UTF-8', $encoding);
+        } catch (\Throwable $e) {
+            return false;
         }
     }