Fatal error after idle time

[cyrakuse]

Hi,

I'm testing your code and i have a problem.
I open the web page and it launch authentication properly.
After, i don't touch the page for 10 min for example. and when i refresh it i obtain a fatal error :

Fatal error: Uncaught TypeError: Cannot access offset of type string on string in inc\auth.php:72 Stack trace: #0 index.php: modAuth->__construct() #1 inc\auth.php on line 72

Any idea ?