- Проверяем вывод формы

common/modules/users/widgets/views/LoginWidget.php

@@ -10,7 +10,7 @@ use yii\helpers\Html;
         <div class="errors_login_popup"></div>
         <?php
 
-        echo $form->field($model, 'email')->textInput(['placeholder'=>"E-mail", 'class'=>'input_st field-input required email'])->label(false);
+        echo $form->field($model, 'username')->textInput(['placeholder'=>"E-mail", 'class'=>'input_st field-input required email'])->label(false);
 
         echo $form->field($model, 'password')->passwordInput(['placeholder'=>"Пароль*", 'class'=>'input_st field-input required email'])->label(false);
         ?>