Merge pull request #14351 from ibennetch/14350

Fix #14350, Uncaught TypeError with error reporting

libraries/classes/ErrorReport.php

@@ -95,7 +95,7 @@ public function getData(string $exceptionType = 'js'): array
             }
             $exception = $_REQUEST['exception'];
             $exception["stack"] = $this->translateStacktrace($exception["stack"]);
-            list($uri, $scriptName) = $this->sanitizeUrl($exception["url"]);
+            list($uri, $scriptName) = $this->sanitizeUrl((string)$exception["url"]);
             $exception["uri"] = $uri;
             unset($exception["url"]);