what am I doing wrong please

This is all of the code for that page and a screen shot I still get
WDE0025 The DSCI collection does not exist.

// API Reference: Introduction - Velo API Reference - Wix.com
// “Hello, World!” Example: Velo Learning Center
import wixUsers from “wix-users” ;
import wixdata from “wix-data” ;
import {session} from ‘wix-storage’ ;

let user = wixUsers.currentUser ;
let isloggedin = user.loggedIn
let userrole = user.role
let userEmail
let MKUserEmail = “MKUserEmail” ;
let MKUserRole = “MKUserRole” ;

$w.onReady( function () {

$w( "#containNewMember" ).hide() ; 
$w( "#BackMember" ).show(); 
$w( "#text45" ).show(); 
wixUsers.promptLogin({ "mode" :  "login" }) 
    .then ( () => { 
    user = wixUsers.currentUser ; 
    user.getEmail() 
    .then( (email) => { 
        userEmail = email; 
        userrole = user.role 

// find if userEmail is in the ds contact info
$w( ‘#text45’ ).text = userEmail
wixdata.query( “DSCI” )
.eq( “title” , userEmail)
.find()

    .then( (results) => { 

let lentext = String(results.items.length) ;
$w( ‘#text46’ ).text = lentext
if (results.items.length > 0 ) {
$w( ‘#text45’ ).text = “in the results >0 area”
// set sessions for display of user in the header of pages
session.setItem(MKUserRole, userrole);
session.setItem(MKUserEmail, userEmail);
$w( “#BackMember” ).show();
}
else {
// The email is not in the ds so add them to the ds.

let toInsert = { “title” : userEmail, “abilites” : “Member” }
wixdata.insert( “DSCI” ,toInsert)
.then( (results) => {

            $w( '#text46' ).text = userEmail                       

// Now, that record has been added via wixData insert, you can
// filter the dataset on the page that is set to the
// collection that you have named DSCI.
$w( “#DSCI” ).setFilter(wixdata.filter()
.eq( “title” , userEmail));
$w( “#containNewMember” ).show();
$w( “#BackMember” ).show();
});
}
})
})
});
})

/**

session.setItem(MKUserRole, userrole); 
session.setItem(MKUserEmail, userEmail); 

$w( "#DSCI" ).save() 
$w( "#BackMember" ).hide(); 
$w( "#BackMember" ).show(); 

}