I got an error when updating to Jevelin tonight.
I used version 184.108.40.206.
Whilst I successfully updated the theme, I saw the attached error message when visiting my site.
A really scary experience since I could not correct it and had to perform an entire site back-up.
Can you help?
Sorry to hear of the problem you are having.
The Internal server error is server related issue so you can try resolving this issue as described in the following page or contact your web host to resolve it.