yii2配置出错，提示对象配置必须是包含“类”元素的数组

在执行$model->save();时报的错，这个错误在网上找了半天没找到原因

Invalid Configuration – yii\base\InvalidConfigException
Object configuration must be an array containing a "class" or "__class" element.
1. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\BaseYii.phpat line 368
359360361362363364365366367368369370371372373374375376377            return static::$container->get($class, $params, $type);
        }
 
        if (isset($type['class'])) {
            $class = $type['class'];
            unset($type['class']);
            return static::$container->get($class, $params, $type);
        }
 
        throw new InvalidConfigException('Object configuration must be an array containing a "class" or "__class" element.');
    }
 
    private static $_logger;
 
    /**
     * @return Logger message logger
     */
    public static function getLogger()
    {
2. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\validators\Validator.php at line 231– yii\BaseYii::createObject([0 => 'status', 1 => 'integer', 'attributes' => ['fid']])
3. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\base\Model.php at line 469– yii\validators\Validator::createValidator(['status'], common\models\Data, ['fid'], [0 => 'status', 1 => 'integer', 'attributes' => ['fid']])
4. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\base\Model.php at line 421– yii\base\Model::createValidators()
5. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\base\Model.php at line 190– yii\base\Model::getValidators()
6. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\base\Model.php at line 355– yii\base\Model::scenarios()
7. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\db\ActiveRecord.php at line 564– yii\base\Model::validate(null)
8. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\db\BaseActiveRecord.php at line 678– yii\db\ActiveRecord::insert(true, null)
......

继续找 20220414 03:21 ...

20220415 已发在知乎 https://zhuanlan.zhihu.com/p/499377845

An Error occurred while handling another error:
yii\web\HeadersAlreadySentException: Headers already sent in D:\AppServ\www\wokan\frontend\controllers\Test2Controller.php on line 120. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\web\Response.php:373
Stack trace:
#0 D:\AppServ\www\wokan\vendor\yiisoft\yii2\web\Response.php(346): yii\web\Response->sendHeaders()
#1 D:\AppServ\www\wokan\vendor\yiisoft\yii2\web\ErrorHandler.php(136): yii\web\Response->send()
#2 D:\AppServ\www\wokan\vendor\yiisoft\yii2\base\ErrorHandler.php(135): yii\web\ErrorHandler->renderException(Object(yii\web\HeadersAlreadySentException))
#3 [internal function]: yii\base\ErrorHandler->handleException(Object(yii\web\HeadersAlreadySentException))
#4 {main}
Previous exception:
yii\web\HeadersAlreadySentException: Headers already sent in D:\AppServ\www\wokan\frontend\controllers\Test2Controller.php on line 120. in D:\AppServ\www\wokan\vendor\yiisoft\yii2\web\Response.php:373
Stack trace:
#0 D:\AppServ\www\wokan\vendor\yiisoft\yii2\web\Response.php(346): yii\web\Response->sendHeaders()
#1 D:\AppServ\www\wokan\vendor\yiisoft\yii2\base\Application.php(398): yii\web\Response->send()
#2 D:\AppServ\www\wokan\frontend\web\index.php(83): yii\base\Application->run()
#3 {main}

使用echo 或者var_dump 输出时，结尾没有加exit()导致的报错...