You must use the "set" method to update an entry. (Again)

Hello, thx for the answer,

I tried the following:

PHP Code:

$data = ['username' => $username,
            'first_name' => $first_name,
            'last_name' => $last_name,
            'email_address' => $email_address,
            'password' => $hash,            
            'activation_token' => $token];    
    $insert = $this->builder->insert($data); 


Resulting in the error: Call to a member function set() on null.

Maybe I have to add the point that the create_user method is part of the UserModel, therefore I thought that with my $this->insert() the method described in the documentation is used: https://codeigniter.com/user_guide/models/model.html

insert()

An associative array of data is passed into this method as the only parameter to create a new row of data in the database. The array’s keys must match the name of the columns in a $table, while the array’s values are the values to save for that key: