DCE error: "Contents: Data Structure ERROR: No ['ROOT']['el'] element found in flex form definition."
This bug is the same as Bug #83642:
I use DCE vers.1.5.2 on Typo3 8.7.10
It appeared when after I created a DCE (saved it) and then edit it by deleting a field.
A possible solution is: create a new DCE with the same fields but with different variables names.
#1 Updated by Tashko Valkov over 2 years ago
I wrote in the main description: "It appeared when after I created a DCE (saved it) and then edit it by deleting a field."
But this isn't the problem.
I found it. It appears if in the label of the title of some field there is and after then you try to create a new CE of this DCE.
If you delete the &nbps; from the label of the title then: when you create a new CE of this DCE then all is good.
(Don't forget, after every change in the structure of the DCE to deinstall it, clear BE cache, and then re-install it again. This must be made in Typo3 8.7.10, otherwise your changes won't be shown in the CE of this DCE).
(I'm not sure but we could close this issue. It is not solved by the creator but in all cases we could use the above solution).