Thanks for sending over the application.log file.
I saw some errors:
Error executing MDX [com.google.gson.stream.MalformedJsonException: Expected name at line 8 column 4]
Unable to retrieve element dimensions [com.google.gson.stream.MalformedJsonException: Expected name at line 8 column 4]
It seems to be connected with how the MDX was written. Perhaps a character error in there? Will you be able to check and the MDXes that you are using there and further isolate which MDX is causing this error?
Alternatively, when you click on the error above, Chrome will show under Network tab, what was the request sent. From there you should be able to check which MDX caused. Then from your HTML page, try changing it to some other simplified statements in the meantime.