修改基础入口引用配置的方式

 <?php
 $params = array_merge(
     require(__DIR__ . '/../../common/config/params.php'),
-    require(__DIR__ . '/../../common/config/params-local.php'),
+    (@include(__DIR__ . '/../../common/config/params-local.php'))?:[],
     require(__DIR__ . '/params.php'),
-    require(__DIR__ . '/params-local.php')
+    (@include(__DIR__ . '/params-local.php'))?:[]
 );
 
 return [

@@ -9,9 +9,9 @@ require(__DIR__ . '/../config/bootstrap.php');
 
 $config = yii\helpers\ArrayHelper::merge(
     require(__DIR__ . '/../../common/config/main.php'),
-    require(__DIR__ . '/../../common/config/main-local.php'),
+    (@include(__DIR__ . '/../../common/config/main-local.php'))?:[],
     require(__DIR__ . '/../config/main.php'),
-    require(__DIR__ . '/../config/main-local.php')
+    (@include(__DIR__ . '/../config/main-local.php'))?:[]
 );
 
 $application = new yii\web\Application($config);

 <?php
 $params = array_merge(
     require(__DIR__ . '/../../common/config/params.php'),
-    require(__DIR__ . '/../../common/config/params-local.php'),
+    (@include(__DIR__ . '/../../common/config/params-local.php'))?:[],
     require(__DIR__ . '/params.php'),
-    require(__DIR__ . '/params-local.php')
+    (@include(__DIR__ . '/params-local.php'))?:[]
 );
 
 return [

 <?php
 $params = array_merge(
     require(__DIR__ . '/../../common/config/params.php'),
-    require(__DIR__ . '/../../common/config/params-local.php'),
+    (@include(__DIR__ . '/../../common/config/params-local.php'))?:[],
     require(__DIR__ . '/params.php'),
-    require(__DIR__ . '/params-local.php')
+    (@include(__DIR__ . '/params-local.php'))?:[]
 );
 
 return [
@@ -14,6 +14,8 @@ return [
     'components' => [
         'request' => [
             'csrfParam' => '_csrf-frontend',
+            // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
+            'cookieValidationKey' => 'hNWgnTak0P0f9VAiC-2UQZTrMtjzpLoN',
         ],
         'user' => [
             'identityClass' => 'common\models\User',
@@ -44,6 +46,13 @@ return [
             ],
         ],
         */
+        'db' => [
+            'class' => 'yii\db\Connection',
+            'dsn' => 'mysql:host=localhost;dbname=yii2advanced',
+            'username' => 'root',
+            'password' => '',
+            'charset' => 'utf8',
+        ],
     ],
     'params' => $params,
 ];

@@ -9,9 +9,9 @@ require(__DIR__ . '/../config/bootstrap.php');
 
 $config = yii\helpers\ArrayHelper::merge(
     require(__DIR__ . '/../../common/config/main.php'),
-    require(__DIR__ . '/../../common/config/main-local.php'),
+    (@include(__DIR__ . '/../../common/config/main-local.php'))?:[],
     require(__DIR__ . '/../config/main.php'),
-    require(__DIR__ . '/../config/main-local.php')
+    (@include(__DIR__ . '/../config/main-local.php'))?:[]
 );
 
 $application = new yii\web\Application($config);