AceIDE cannot be activated on Localhost using XAMPP

So I was trying to install this plugin in WordPress plugins store, but I was unable to install it, then I manually downloaded it from the other source, the plugin is installed but cannot active it. It shows this error mentioned below.

Plugin could not be activated because it triggered a fatal error.

Fatal error: Array and string offset access syntax with curly braces is no longer supported in E:\xampp\htdocs\practice\minima\wp-content\plugins\aceide\src\Modules\FileOps.php on line 749