How To Fix Internal Server Error
To coordinate WordPress with your server, You need to do a few things.
This configuration will help you use WordPress and themes better.
Please read the bellow links:
Host configurations: To access these fields please edit “php.ini” file which is located in host (if you can’t find it then contact with your host service provider)
upload_max_filesize = 32M
post_max_size = 48M
memory_limit = 128M
max_execution_time = 600
max_input_vars = 10000
max_input_time = 400
500 Internal server error causes from website’s server and it is not related to the theme.
Please read the following article: