Thanks, whooami! I restored the original cache.php and changed the line in \plugin.php according to the link and that fixed it.
That fix worked for me. Thanks, trentreznor!
I just got the same thing. Checking my themes it says
“Array Array Array
All of this themes files are located in Array”
The two default themes are listed under Broken Themes and show that the template is missing. I uploaded an new theme and it shows the same error.
Don’t know what’s going on.
