Tell us what you are trying to do?
I am trying to install the Toolset plugins on an empty wordpress page. As soon as I install and activate the CRED plugin or the VIEW plugin my site stops working and the pluginpage in my wordpress Dashboard disappears. The empty wordpress page is registered as hidden link in Toolset.
Is there any documentation that you are following?
No. I just try to set up the page, like I did it before with my other projects, where I never faced such an error.
I can install the CRED plugin but as soon as I activate the plugin it's showing me this page (screenshot-02.jpg) - no error message.
After the CRED plugin activation, everytime I go to the pluginpage in my WordPress Dashboard page, which you can view in my screenshot, appears.
This is the message i've got from the debug.log :
[15-May-2020 16:02:08 UTC] PHP Notice: Undefined index: items in /homepages/42/d731367982/htdocs/clickandbuilds/BYWOODDasHolzportal/wp-includes/rest-api.php on line 1245
And this is the code from the rest-api.php on line 1245:
I would suggest you contact your hosting provider for them to have a look into this because checking this on the copy of your site the plugins page displays fine. See Screenshot
Perhaps they can give a better explanation as to why this is happening. Also ask them to clear any cache that could be on your site as well.