Laravel Gmail: Expected response code 250 but got code "535", with message "535-5.7.8 Username and Password not accepted. Learn more at 535 5.7.8

Hey guys I am using laravel and trying to send mail from contact page.It is working fine on local server, but when I am trying to test it on server it is giving me error with user credentials error.

Here is my .env file:

MAIL_DRIVER=smtp MAIL_HOST=smtp.gmail.com MAIL_PORT=587 MAIL_USERNAME=app@gmail.com MAIL_PASSWORD=AppPassword MAIL_ENCRYPTION=tls