TypeError: Unsupported operand types: array + string in /var/www/html/vendor/craftcms/cms/src/services/Elements.php:3761
Stack trace:
#0 /var/www/html/vendor/craftcms/cms/src/services/Elements.php(1220): craft\services\Elements->craft\services\{closure}()
#1 /var/www/html/vendor/craftcms/cms/src/services/Elements.php(3594): craft\services\Elements->ensureBulkOp()
#2 /var/www/html/vendor/craftcms/cms/src/services/Elements.php(1306): craft\services\Elements->_saveElementInternal()
#3 /var/www/html/vendor/craftcms/cms/src/controllers/ElementsController.php(1233): craft\services\Elements->saveElement()
#4 [internal function]: craft\controllers\ElementsController->actionSave()
#5 /var/www/html/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array()
#6 /var/www/html/vendor/yiisoft/yii2/base/Controller.php(178): yii\base\InlineAction->runWithParams()
#7 /var/www/html/vendor/yiisoft/yii2/base/Module.php(552): yii\base\Controller->runAction()
#8 /var/www/html/vendor/craftcms/cms/src/web/Application.php(350): yii\base\Module->runAction()
#9 /var/www/html/vendor/craftcms/cms/src/web/Application.php(649): craft\web\Application->runAction()
#10 /var/www/html/vendor/craftcms/cms/src/web/Application.php(312): craft\web\Application->_processActionRequest()
#11 /var/www/html/vendor/yiisoft/yii2/base/Application.php(384): craft\web\Application->handleRequest()
#12 /var/www/html/web/index.php(12): yii\base\Application->run()
#13 {main}