第一次搬家，後台管理無法開啟

小弟第一次搬家，使用UpdraftPlus外掛模組，另一新主機也安裝wordpress也裝UpdraftPlus模組
來進行同步還原，前台網站ok
但是後台網站就不行了
出現錯誤訊息如下
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Fatal error: Uncaught Error: [] operator not supported for strings in /volume1/web/wordpress/wp-content/plugins/revslider/inc_php/framework/base_admin.class.php:73 Stack trace: #0 /volume1/web/wordpress/wp-content/plugins/revslider/revslider_admin.php(237): UniteBaseAdminClassRev::addMetaBox(‘Revolution Slid…’, Object(UniteSettingsAdvancedRev), Array, NULL) #1 /volume1/web/wordpress/wp-content/plugins/revslider/revslider_admin.php(68): RevSliderAdmin->addSliderMetaBox() #2 /volume1/web/wordpress/wp-content/plugins/revslider/revslider_admin.php(40): RevSliderAdmin->init() #3 /volume1/web/wordpress/wp-content/plugins/revslider/revslider.php(147): RevSliderAdmin->__construct(‘/volume1/web/wo…’) #4 /volume1/web/wordpress/wp-settings.php(360): include_once(‘/volume1/web/wo…’) #5 /volume1/web/wordpress/wp-config.php(111): require_once(‘/volume1/web/wo…’) #6 /volume1/web/wordpress/wp-load.php(37): require_once(‘/volume1/web/wo…’) #7 /volume1/web/wordpress/wp-admin/admin.php(34): require_once(‘/volume1/web/wo…’) #8 /v in /volume1/web/wordpress/wp-content/plugins/revslider/inc_php/framework/base_admin.class.php on line 73
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