Hello @damiko193,
The first thing you should do is to know why Chevere is trying to use install outside public_html dir, that install should be inside public_html as @Raphael pointed out a few posts above.
If you can’t change the install file/dir for whatever reason, you should add /home/admin/web/spinor.skin/install to open_basedir directive.
The easiest way would be to add it to file .user.ini inside public_html dir but you can’t do that because the php-fpm template defines open_basedir like this:
php_admin_value[open_basedir] = /home/%user%/.composer:/home/%user%/web/%domain%/public_html:/home/%user%/web/%domain%/private:/home/%user%/web/%domain%/public_shtml
:/home/%user%/tmp:/tmp:/var/www/html:/bin:/usr/bin:/usr/local/bin:/usr/share:/opt
As it is defined using php_admin_value, you can’t override it in ini files so you must create a php-fpm template, modify it to suit your needs, assign that backend template to your site and rebuild it.
More info here:
I’m always talking about an installation with nginx+php-fpm, if you are also using apache, I don’t know if you can solve it using .htaccess file or any other method.
If you need help to create a template, let us know but check very well all the info we have posted.
Good luck,
sahsanu