database file issue

[choudharybilal]

@ankitrai96 sir there is no database files in your apti-portal kindly upload sql files
your project is really helpfull.

[SamFSD]

guys how do i sort out this issue:

Fatal error: Uncaught Error: Call to a member function query() on null in C:\xampp\htdocs\script\apti-portal\class\users.php:160 Stack trace: #0 C:\xampp\htdocs\script\apti-portal\index.php(4): users->activetests() #1 {main} thrown in C:\xampp\htdocs\script\apti-portal\class\users.php on line 160

tried everything i could think of.
you help will be appreciated