Laravel 5.6: sending email to BCC without adding email in TO()

How to send email to only bcc() without to(). When I tried, I got error

Error Information.

URL: http://example.com Parameters: [] Request Name: Request Method: GET Line Number: 309 File: /var/www/html/project_name/vendor/laravel/framework/src/Illuminate/Mail/Mailable.php Client IP: 127.0.0.1 HTTP Referer: Is Secure: Is Ajax: userAgent: Symfony content: Error Message: Whoops! There was an error. ErrorException (E_WARNING) Illegal string offset 'address' ErrorException thrown with message "Illegal string offset 'address'" Stacktrace: #38 ErrorException in /var/www/html/project_name/vendor/laravel/framework/src/Illuminate/Mail/Mailable.php:309 #37 Illuminate\Foundation\Bootstrap\HandleExceptions:handleError in /var/www/html/project_name/vendor/laravel/framework/src/Illuminate/Mail/Mailable.php:309

Sending email to all bcc without using to

via Chebli Mohamed