Virus threat in theme

HI there

I’m a newbie in need of help please!

Antivirus I’m running says that these are threats, but I can’t seem to find proper info on the issue. Could someone let me know if they could cause problems and how to fix it?

My themescanner said everything was fine, but antivirus disagrees. My site is in development so haven’t had any issues yet…

epanel/custom_functions.php
if ( is_file( $file ) ) $thumbnail = str_replace( ABSPATH, t ...

$theme_response = unserialize( wp_remote_retrieve_body( $theme_request ) ) ...

AND

/functions.php
$widgets = ob_get_contents();
$posts = ob_get_contents();
$posts = ob_get_contents();