Cornerstone on Wordpress, Backend Error

[glindner]

Hi everybody,
first of all I am not really good at these things, that is probably why the error occured.
A while ago my I tried to do an update in the backend of our homepage, and since then I get the following error when trying to acces /wp-admin:

Fatal error : Uncaught Error: Call to undefined method ReflectionType::getName() in /homepages/26/d687536894/htdocs/clickandbuilds/MeinPflegedienstMannheim/wp-content/plugins/cornerstone/includes/classes/Plugin.php:106 Stack trace: #0 [internal function]: Themeco\Cornerstone\Plugin->Themeco\Cornerstone{closure}(Object(ReflectionParameter)) #1 /homepages/26/d687536894/htdocs/clickandbuilds/MeinPflegedienstMannheim/wp-content/plugins/cornerstone/includes/classes/Plugin.php(117): array_map(Object(Closure), Array) #2 /homepages/26/d687536894/htdocs/clickandbuilds/MeinPflegedienstMannheim/wp-content/plugins/cornerstone/includes/classes/Plugin.php(137): Themeco\Cornerstone\Plugin->create(’\Themeco\Corner…’) #3 /homepages/26/d687536894/htdocs/clickandbuilds/MeinPflegedienstMannheim/wp-content/plugins/cornerstone/includes/classes/Plugin.php(73): Themeco\Cornerstone\Plugin->resolve(’\Themeco\Corner…’) #4 /homepages/26/d687536894/htdocs/clickandbuilds/MeinPflegedienstMannheim/wp-content/plugins/cornerstone/includes/classes/ in /homepages/26/d687536894/htdocs/clickandbuilds/MeinPflegedienstMannheim/wp-content/plugins/cornerstone/includes/classes/Plugin.php on line 106

Unfortunately, there are no orking backups of the site, so I can not just restore a backup and get it to work again.

Can anyone explain to me what would be the best solution to get access to the wp-backend again?

Thanks

[tristup]

Hi Gregor,

Thanks for reaching out.
It seems the PHP version is the reason behind your issue, I would suggest you upgrade the PHP version to 7.4 by contacting your Hosting Service provider and check if that issue resolves or not. I would also suggest you update the X to its latest version i.e. 9.0.8 and install the Cornerstone by following the below steps.

1. Delete the Cornerstone existing one
2. After deletion please use the link in the dashboard to automatically install the Cornerstone.

Please clear all type cache including the Style Cache from Cornerstone > Settings > System > Clear Style Cache and check in the incognito/private mode of the browser.
If that does not resolve your issue, please provide login credentials for your site in a secure note to examine it further, including:

– WordPress Site URL & Login URL
– WordPress Admin username/password

To create a secure note, click the key icon underneath any of your posts.

Thanks

[glindner]

Hi Tristup,
thank you very much for your fast reply. I got into the backend using a different url and were able to update everything.

It works now.

Thanks again!

[tristup]

Hi Gregor,

Glad that we are able to help you.

Thanks