In case for those who had this error here is how to solve it download the three files then go:
and replace all the files you downloaded
Debug Error Ue5 - Google Drive
I just checked. These files are the normal 5.0 versions.
I am having the same issue.
Had the same issue, one of the animation blueprints in the hierarchy got corrupted and corrupted all of it’s children.
I suspect that it was created as a duplicate, rather than by right clicking on parent and creating a child blueprint class.
What solved the problem for me was recreating that part of hierarchy.
Tried out re-saving the asset, refreshing all nodes, setting all of the settings to defaults, save - exit - open, no result. Only newly created ABP_Enemy and ABP_Enemy_A fixed the issue.
Hope it helps, and you don’t have too much to copy&paste there