Codeigniter 4 Database Connection With Model

Error App\models\BookModel not found..... That error is coming....

user.php ki file bnai kaha pr hai ap ne ?

sir aap pura nahi dikhate plz pura dikhaiye skip mat kijiye isme user ka page kaha banaya hai ?

sir i m follow same process but i see welcome page .database not connect

Where to add user page & model video is so short . Kindly elaborate

sir I got error CodeIgniter\Database\Exceptions\DatabaseException #8. what do you think it happen?

oci8 ?

my db is not connecting using this model. :
error : 1. SYSTEMPATH/Database/BaseConnection.php : 646 — CodeIgniter\Database\BaseConnection->initialize ()
2. SYSTEMPATH/Database/BaseBuilder.php : 1860 — CodeIgniter\Database\BaseConnection->query ( arguments )

sir m unable to deal with models