Hello,
I tried installing the Editor plugin but got this error message before

Whoops\Exception\ErrorException thrown with message "Indirect modification of overloaded property Twelvetone\Common\ServiceInfo::$implementation has no effect"
Stacktrace:
26 Whoops\Exception\ErrorException in D:\CrackleSupportSites\php\unndlc\user\plugins\core-service-manager\core-service-manager.php:84
25 Whoops\Run:handleError in D:\CrackleSupportSites\php\unndlc\user\plugins\core-service-manager\core-service-manager.php:84
24 Grav\Plugin\CoreServiceManagerPlugin:Grav\Plugin{closure} in D:\CrackleSupportSites\php\unndlc\user\plugins\core-service-manager\classes\ServiceManager.php:387
23 Twelvetone\Common\ServiceManager:notifyListeners in D:\CrackleSupportSites\php\unndlc\user\plugins\core-service-manager\classes\ServiceManager.php:116
22 Twelvetone\Common\ServiceManager:registerService in D:\CrackleSupportSites\php\unndlc\user\plugins\editor\editor.php:150
21 Grav\Plugin\EditorPlugin:onAdminMenu in D:\CrackleSupportSites\php\unndlc\vendor\symfony\event-dispatcher\EventDispatcher.php:184
20 call_user_func in D:\CrackleSupportSites\php\unndlc\vendor\symfony\event-dispatcher\EventDispatcher.php:184
19 Symfony\Component\EventDispatcher\EventDispatcher:doDispatch in D:\CrackleSupportSites\php\unndlc\vendor\symfony\event-dispatcher\EventDispatcher.php:46
18 Symfony\Component\EventDispatcher\EventDispatcher:dispatch in D:\CrackleSupportSites\php\unndlc\vendor\rockettheme\toolbox\Event\src\EventDispatcher.php:23
17 RocketTheme\Toolbox\Event\EventDispatcher:dispatch in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Grav.php:283
16 Grav\Common\Grav:fireEvent in D:\CrackleSupportSites\php\unndlc\user\plugins\admin\admin.php:523
15 Grav\Plugin\AdminPlugin:onTwigSiteVariables in D:\CrackleSupportSites\php\unndlc\vendor\symfony\event-dispatcher\EventDispatcher.php:184
14 call_user_func in D:\CrackleSupportSites\php\unndlc\vendor\symfony\event-dispatcher\EventDispatcher.php:184
13 Symfony\Component\EventDispatcher\EventDispatcher:doDispatch in D:\CrackleSupportSites\php\unndlc\vendor\symfony\event-dispatcher\EventDispatcher.php:46
12 Symfony\Component\EventDispatcher\EventDispatcher:dispatch in D:\CrackleSupportSites\php\unndlc\vendor\rockettheme\toolbox\Event\src\EventDispatcher.php:23
11 RocketTheme\Toolbox\Event\EventDispatcher:dispatch in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Grav.php:283
10 Grav\Common\Grav:fireEvent in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Twig\Twig.php:324
9 Grav\Common\Twig\Twig:processSite in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Service\OutputServiceProvider.php:27
8 Grav\Common\Service\OutputServiceProvider:Grav\Common\Service{closure} in D:\CrackleSupportSites\php\unndlc\vendor\pimple\pimple\src\Pimple\Container.php:118
7 Pimple\Container:offsetGet in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Processors\RenderProcessor.php:19
6 Grav\Common\Processors\RenderProcessor:process in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Grav.php:132
5 Grav\Common\Grav:Grav\Common{closure} in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Grav.php:374
4 Grav\Common\Grav:Grav\Common{closure} in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Grav.php:350
3 call_user_func_array in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Grav.php:350
2 Grav\Common\Grav:__call in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Grav.php:133
1 Grav\Common\Grav:measureTime in D:\CrackleSupportSites\php\unndlc\system\src\Grav\Common\Grav.php:133
0 Grav\Common\Grav:process in D:\CrackleSupportSites\php\unndlc\index.php:52
It also changed the dynamics of the website. Please, help.