Unable to open theme builder in xanadu version

[Shiva Durga Pra]

When I am trying to open the theme builder I am unable to open that, 
I have admin access 

pleas find the error image in the attachment

[Nicole Disbro]

I am on Yokohama Patch 5 having the same error message.

[davesekerak]

I'm having the same issue, we are on Patch 4 and repair plugin did not work.

[Nicole Disbro]

Submitted a case for this - will share results when I get them!