please take again a look at your screenshot, that’s only a warning and a completely other files, it’s not the file(s) from your test. A warning is only a warning, not an error. Those messages are only for developers and should never be visible on public websites because a hacker can provoke such kind of messages and find weak points on your website. You should contact your hosting provider and ask to remove “PHP error messages and warnings” in the php.ini file. Again: that’s nothing for public websites!
If you want, you can send us (please via mail to info @ 7theme . net ) a mail, then we can add a workaround on your website to remove the error message.