Exception in SF 5

Posted by Community Admin on 04-Aug-2018 12:23

Exception in SF 5

Sitefinity - Front- & Back-End Development

All Replies

Posted by Community Admin on 15-Jun-2012 00:00

Hi,
I am migrating a website from SF 3.7 to 5. The site is deployed in azure.
Everything was working fine. But now the site is showing error when I try to edit the page in admin site.
Value cannot be null.
Parameter name: key.
When I check the template for the master page, it shows this error message in the widget area of menu controls.

What is causing this error. Please help. 
Is it related to radcontrol because both these are radcontrols. Or is it related to the BuildAction property. If so, what should be set to this property.
Please see the attachment.

Thanks.

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