Employee Center Header Error with Xanadu Patch 4 in Developer Instance

[Molly KM Ops]

When I implemented Xanadu Patch 4 in my developer instance, now suddenly my header and megamenu is disappearing on my Employee Center Pro pages. These are the errors I am getting, see image. How do I fix this?

[-O-]

Are the "Employee Center" and "Employee Center Core" apps upgraded to their latest version (I believe it is "35.0.2" and "35.0.6" respectively)?

[MennaK · Accepted solution]

We followed @-O- 's lead and updated"Employee Center" and "Employee Center Core" apps, as well as "Employee Center Pro" and "Content Publishing" - this fixed our issue.

[Molly KM Ops]

My Employee Center was not on the latest version, so I updated to that and it removed the errors. However, now my taxonomy does not show at all - the mega menu has disappeared. 

[Molly KM Ops]

Last update. Steps I took to fix the issue:

1. Update Employee Center application to latest version. However, this then removed my taxonomy from my mega menu, and I found that it had turned my taxonomy from true to false.

2. Had to turn my taxonomy back to true. 

Now my mega menu is working correctly with no errors.