From Apache to Apache virtual host.. error 500

[altziokas]

Hi,

our prestashop was installed on /var/www/html

now we want a second shop and so we configured virtual hosts on apache.

when we place index.html with the text in the below folders:

 

/var/www/sites/example1/html

and 

/var/www/sites/example2/html

 

the sites work

but when we move the files from the /var/www/html to the var/www/sites/example1/html

the shop does not work.

 

any ideas why? and where to look? (we have prestashop 1.7).

 

many thanks,

A