hello I am trying to install but getting this error

Verify your purchase

Fatal error: Uncaught Error: Attempt to assign property “status” on null in C:\xampp\htdocs\sma\install\install.php:137 Stack trace: #0 C:\xampp\htdocs\sma\install\index.php(25): require() #1 {main} thrown in C:\xampp\htdocs\sma\install\install.php on line 137

please help

thanks