Fatal error: Array and string offset access syntax with curly braces is no longer supported in C:\xampp\php\pear\System.php on line 268

[HaroldChoung]

Fatal error: Array and string offset access syntax with curly braces is no longer supported in C:\xampp\php\pear\System.php on line 268

[hfig]

Stack trace?

You have some ancient version of the pear core library installed. If its on your include path ahead of what the composer autoloader adds (ie your vendor directory) then you're going to have a baaadddd time.

I would recommend deleting C:\xampp\php\pear and that you open an issue with the xampp project to have them stop shipping broken, ancient, pear with their PHP distribution.