Error 500 when upgrading from 1.5.6 to 2.x.x

Hello there,

I have a opencart store named as kiranawale.com and running on opencart 1.5.6 in VPS plesk panel with PHP version 5.5.9, everything is working fine but since I need some more features, I am trying to upgrade to any version 2.x.x. My site is running with SSL by comodo and for redirects i have written code in .htaccess as below

# Always use https for secure connections
# Replace 'www.example.com' with your domain name
# (as it appears on your SSL certificate)
RewriteEngine On
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://%{SERVER_NAME}/$1 [R=301,L]

and now I have uploaded all the files to root folder but when accessing kiranawale.com/install to upgrade it shows up with 500 error. Please help me with the issue.

Thanks in advance

Hi,
Are you still need any help for this issue ?