Received "Internal Server Error" or "Data Not Available" when editing a Page Layout
|Knowledge Article Number||000199206|
|Description||This error message appears when clicking the "Edit" link next to a Page Layout. If the occurrence seems sudden, is reproducible, and there have been no recent changes made to the environment, it's worth reviewing the troubleshooting steps below.|
|Resolution||Clear your Web Browser Cache and Cookies
Issues with your browser can cause web pages to perform abnormally when the Cache and Cookies are due for a refresh. Try troubleshooting browser issues for either your Mac and PC computer, which includes instructions on how to clear your Cache and Cookies
Try replicating the error in the old Page Layout
1. From Setup, click Customize | User Interface.
2. Uncheck the box for "Enable Enhanced Page Layout Editor."
3. Edit the Page Layout (This may resolve the issue)
Check your Managed Package