back slash before all images in new posts after saved as draft

on new posts got all images are missing, the reference’s uri or path as follows https://thedomain.com/blog/”\https://thedomain.com/blog/wp-content/… . here’s https://pastebin.com/k3GghHqR in the editor for how was the image tag after i’ve saved as draft, don’t know if you have a comment or anybody may suggest something to do always => \ is added before the image path.

Below a screenshots to how it looks like in both the preview and editor after i’ve saved it. https://img168.imageshack.us/i/missinge.jpg/ and https://img295.imageshack.us/i/missingpreview.jpg/

Also i’ve tried to comment out set_magic_quotes_runtime( 0 ); in wp-settings.php and put in conditional ->

if(version_compare(PHP_VERSION, '5.3.0', '<'))
{
set_magic_quotes_runtime(0);
}

Also tried to add :

if ( get_magic_quotes_gpc() ) {
    $_POST      = array_map( 'stripslashes_deep', $_POST );
    $_GET       = array_map( 'stripslashes_deep', $_GET );
    $_COOKIE    = array_map( 'stripslashes_deep', $_COOKIE );
    $_REQUEST   = array_map( 'stripslashes_deep', $_REQUEST );
}

No way ,i’ll really appreciate if anyboy may help