由docker镜像版本的18.12升级到20.6后，无法访问报错：Fatal error: Uncaught Error: Attempt to assign property "editor" on null in

请问如何解决

Fatal error: Uncaught Error: Attempt to assign property "editor" on null in /apps/zentao/extension/custom/common/ext/lang/zh-cn/editor.php:2 Stack trace: #0 /apps/zentao/framework/base/router.class.php(3010): include() #1 /apps/zentao/framework/router.class.php(136): baseRouter->loadLang('common', '') #2 /apps/zentao/framework/base/router.class.php(510): router->loadLang('common') #3 /apps/zentao/framework/base/router.class.php(487): baseRouter->setClient() #4 /apps/zentao/framework/base/router.class.php(534): baseRouter->__construct('pms', '/apps/zentao', 'running') #5 /apps/zentao/www/index.php(33): baseRouter::createApp('pms', '/apps/zentao', 'router') #6 {main} thrown in /apps/zentao/extension/custom/common/ext/lang/zh-cn/editor.php on line 2