When i am going to customization and checking column name under views, i am finding GUID suddenly and on the web display names are totally fine.
Attaching the screen shot, can anyone let me know why that is happening and how to solve it, last time i had to recreate a view to resolve such option.
If I double click on this column which showing guid I get a message "column is no longer a valid column because it has been deleted as a column option. You need to remove this column and, if you want, add a different one".. although columns are there and they are visible on web nicely with correct display name