But the problem is when I create a new site under the ‘Apache server’ and then when I try to upload themes/plugins manually it shows me ‘Internal Server Error’.
Error like this
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at webmaster@localhost to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.