UsersController login action responds 500 Internal Server Error

[blasvicco]

Description

The /src/controllers/UsersController.php:actionLogin() result in Internal Server Error when the form submission doesn't post the field loginName.

TypeError: Argument 1 passed to craft\services\Users::getUserByUsernameOrEmail() must be of the type string, null given, called in /var/www/app/vendor/craftcms/cms/src/controllers/UsersController.php on line 128 and defined in /var/www/app/vendor/craftcms/cms/src/services/Users.php:165
Stack trace:
#0 /var/www/app/vendor/craftcms/cms/src/controllers/UsersController.php(128): craft\services\Users->getUserByUsernameOrEmail(NULL)
#1 [internal function]: craft\controllers\UsersController->actionLogin()
#2 /var/www/app/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)
#3 /var/www/app/vendor/yiisoft/yii2/base/Controller.php(157): yii\base\InlineAction->runWithParams(Array)
#4 /var/www/app/vendor/craftcms/cms/src/web/Controller.php(103): yii\base\Controller->runAction('login', Array)
#5 /var/www/app/vendor/yiisoft/yii2/base/Module.php(528): craft\web\Controller->runAction('login', Array)
#6 /var/www/app/vendor/craftcms/cms/src/web/Application.php(282): yii\base\Module->runAction('users/#', Array)
#7 /var/www/app/vendor/craftcms/cms/src/web/Application.php(541): craft\web\Application->runAction('users/#', Array)
#8 /var/www/app/vendor/craftcms/cms/src/web/Application.php(266): craft\web\Application->_processActionRequest(Object(craft\web\Request))
#9 /var/www/app/vendor/yiisoft/yii2/base/Application.php(386): craft\web\Application->handleRequest(Object(craft\web\Request))
#10 /var/www/app/web/index.php(98): yii\base\Application->run()
#11 {main}

Expected behavior

• Error should be log.
• 400 Status Code Bad Request Error should be return.

Steps to reproduce

1. curl -X POST http://your.craft.project.com/?p=/#

Additional info

• Craft version: 3.0.25
• PHP version: 7.0.31

[brandonkelly]

Fixed for tomorrow’s release. Thanks for reporting!