Warning: Trying to access array offset on value of type null in /home/minibanco/public_html/sistema.minibanco.com/tmp/check_key.php on line 28

TypeError: json_decode(): Argument #1 ($json) must be of type string, null given in /home/minibanco/public_html/sistema.minibanco.com/tmp/check_key.php:28
Stack trace:
#0 /home/minibanco/public_html/sistema.minibanco.com/tmp/check_key.php(28): json_decode(NULL, true)
#1 {main}