Error with Tasks & 'Connector for Google Calendar'

[Mithun]

I have written a before_save logic_hook in Leads to create the task if th assigned to field changes. But the task is not saving and produces the below error. Is it a 'Connector for Google Calendar' issue?

Notice: Undefined variable: response in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 58

Notice: Undefined variable: tn1 in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 58

Notice: Undefined property: Task::$location in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 73

Notice: Undefined property: Task::$date_end in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 76

Notice: Undefined property: Task::$reminder_time in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 77

Notice: Undefined property: Task::$duration_hours in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 146

Notice: Undefined property: Task::$duration_minutes in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 146

Notice: Undefined offset: 2 in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 146

Notice: Undefined offset: 2 in D:\wamp\www\urbancrm\custom\include\Calls\google_calendar_plg.php on line 161

My logic Hook is

  
    function lead_before_save_func(&$bean, $event, $arguments) {
    
        global $db, $current_user;
        include_once('modules/Tasks/Task.php');
        if($bean->fetched_row['assigned_user_id'] != $bean->assigned_user_id ) {
            // Assigned to field changed
            $create_task = true;
            // Some code here
 
            if($create_task) {
            
                $task = new Task();
                
                $guid = create_guid();
                $name = $bean->first_name.' '.$bean->last_name;
                $date = date("Y-m-d h:i:s");
                $description = "Name: $name, \nPhone: $bean->phone_mobile, \nEmail:$bean->email1, \nComments: $bean->comments_c";
            //    $task->id = $guid;
                $task->name = $name;
                $task->date_entered = $date;
                $task->created_by   = $current_user->id;
                $task->assigned_user_id = $bean->assigned_user_id;
                $task->status = "Not Started";
                $task->date_due = $date;
                $task->date_start = $date;
                $task->parent_type = "Leads";
                $task->parent_id = $bean->id;
                $task->priority = "Medium";
                $task->description = $description;
                $_SESSION["called_from_sync"] = false;
                
                $task->save();
                
            }
            
        }