Fix PHP Warning: Undefined array key 0 in C:\Users\flo\git\joomla-cms…

…-40-dev\plugins\system\debug\src\DataFormatter.php on line 79 #36716

plugins/system/debug/src/DataFormatter.php

@@ -74,7 +74,7 @@ public function formatCallerInfo(array $call): string
 
 			$string = rtrim($string, ', ') . ')';
 		}
-		elseif (isset($call['args']))
+		elseif (isset($call['args'][0]))
 		{
 			$string .= htmlspecialchars($call['function']) . ' ' . $call['args'][0];
 		}