Username and Password not accepted at Gmail SMTP Laravel 5.2

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1/1 Swift_TransportException in AbstractSmtpTransport.php line 383: 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 https://support.google.com/mail/answer/14257 yu7sm18711248pab.45 - gsmtp
"

1. in AbstractSmtpTransport.php line 383
2. at Swift_Transport_AbstractSmtpTransport->_assertResponseCode('535-5.7.8 Username and Password not accepted. Learn more at 535 5.7.8 https://support.google.com/mail/answer/14257 yu7sm18711248pab.45 - gsmtp ', array('250')) in AbstractSmtpTransport.php line 281
3. at Swift_Transport_AbstractSmtpTransport->executeCommand('RSET ', array('250'), array()) in EsmtpTransport.php line 270
4. at Swift_Transport_EsmtpTransport->executeCommand('RSET ', array('250')) in XOAuth2Authenticator.php line 55
5. at Swift_Transport_Esmtp_Auth_XOAuth2Authenticator->authenticate(object(Swift_SmtpTransport), 'adiatstei07@gmail.com', 'hisoka@adi@187') in AuthHandler.php line 176
6. at Swift_Transport_Esmtp_AuthHandler->afterEhlo(object(Swift_SmtpTransport)) in EsmtpTransport.php line 334
7. at Swift_Transport_EsmtpTransport->_doHeloCommand() in AbstractSmtpTransport.php line 118
8. at Swift_Transport_AbstractSmtpTransport->start() in Mailer.php line 79
9. at Swift_Mailer->send(object(Swift_Message), array()) in Mailer.php line 385
10. at Mailer->sendSwiftMessage(object(Swift_Message)) in Mailer.php line 171
11. at Mailer->send(null, array('message' => object(Message)), object(Closure)) in Mailer.php line 125
12. at Mailer->raw('email.welcome', object(Closure)) in Facade.php line 219
13. at Facade::__callStatic('raw', array('email.welcome', object(Closure))) in HomeController.php line 44
14. at HomeController->defaultSend()
15. at call_user_func_array(array(object(HomeController), 'defaultSend'), array()) in Controller.php line 80
16. at Controller->callAction('defaultSend', array()) in ControllerDispatcher.php line 146
17. at ControllerDispatcher->call(object(HomeController), object(Route), 'defaultSend') in ControllerDispatcher.php line 94
18. at ControllerDispatcher->Illuminate\Routing\{closure}(object(Request))
19. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
20. at Pipeline->Illuminate\Routing\{closure}(object(Request))
21. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
22. at Pipeline->then(object(Closure)) in ControllerDispatcher.php line 96
23. at ControllerDispatcher->callWithinStack(object(HomeController), object(Route), object(Request), 'defaultSend') in ControllerDispatcher.php line 54
24. at ControllerDispatcher->dispatch(object(Route), object(Request), 'App\Http\Controllers\HomeController', 'defaultSend') in Route.php line 174
25. at Route->runController(object(Request)) in Route.php line 140
26. at Route->run(object(Request)) in Router.php line 724
27. at Router->Illuminate\Routing\{closure}(object(Request))
28. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
29. at Pipeline->Illuminate\Routing\{closure}(object(Request)) in VerifyCsrfToken.php line 64
30. at VerifyCsrfToken->handle(object(Request), object(Closure))
31. at call_user_func_array(array(object(VerifyCsrfToken), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
32. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
33. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
34. at Pipeline->Illuminate\Routing\{closure}(object(Request)) in ShareErrorsFromSession.php line 49
35. at ShareErrorsFromSession->handle(object(Request), object(Closure))
36. at call_user_func_array(array(object(ShareErrorsFromSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
37. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
38. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
39. at Pipeline->Illuminate\Routing\{closure}(object(Request)) in StartSession.php line 64
40. at StartSession->handle(object(Request), object(Closure))
41. at call_user_func_array(array(object(StartSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
42. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
43. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
44. at Pipeline->Illuminate\Routing\{closure}(object(Request)) in AddQueuedCookiesToResponse.php line 37
45. at AddQueuedCookiesToResponse->handle(object(Request), object(Closure))
46. at call_user_func_array(array(object(AddQueuedCookiesToResponse), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
47. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
48. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
49. at Pipeline->Illuminate\Routing\{closure}(object(Request)) in EncryptCookies.php line 59
50. at EncryptCookies->handle(object(Request), object(Closure))
51. at call_user_func_array(array(object(EncryptCookies), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
52. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
53. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
54. at Pipeline->Illuminate\Routing\{closure}(object(Request))
55. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
56. at Pipeline->then(object(Closure)) in Router.php line 726
57. at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 699
58. at Router->dispatchToRoute(object(Request)) in Router.php line 675
59. at Router->dispatch(object(Request)) in Kernel.php line 246
60. at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))
61. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 52
62. at Pipeline->Illuminate\Routing\{closure}(object(Request)) in CheckForMaintenanceMode.php line 44
63. at CheckForMaintenanceMode->handle(object(Request), object(Closure))
64. at call_user_func_array(array(object(CheckForMaintenanceMode), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
65. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
66. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32
67. at Pipeline->Illuminate\Routing\{closure}(object(Request))
68. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
69. at Pipeline->then(object(Closure)) in Kernel.php line 132
70. at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 99
71. at Kernel->handle(object(Request)) in index.php line 53
72. at require_once('C:\xampp\htdocs\TestQueue2\queuelagi\public\index.php') in server.php line 21

Open these links and turn it on/activate the service :
1. https://www.google.com/settings/security/lesssecureapps 

2. https://accounts.google.com/b/0/DisplayUnlockCaptcha {This is an optional step}

After setting above config, restart your laravel server... Turn off your antivirus... aaaand... you are good to rock... :)