Async mode and JS compress callbak no longer working [#2880053]

For unknown reasons, Async mode no longer works.
Also
- in Status page "The callback for testing if a JS file is compressible is not working."
- in Info page "Missing files sites/www.see.asso.fr/files/ctools/css/5fbaebc8c31246d96452f086a79641ef.css"
Asynchronous debug info :

stdClass Object (
    [request] => GET /home/web2/public_html/see.asso.fr/home/web2/public_html/see.asso.fr/home/web2/public_html/see.asso.fr/index.php?q=sites/www.see.asso.fr/files/advagg_css/css_missing11435336491495298662_0.css HTTP/1.0
Host: www.see.asso.fr
User-Agent: Drupal (+http://drupal.org/)
Connection: close
Authorization: Basic d2VibWFzdGVyQHNlZS5hc3NvLmZyOiRmYXV0ZWRlbWlldXghPyE=

    [data] => <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a href="http://www.see.asso.fr/home/web2/public_html/see.asso.fr/home/web2/public_html/see.asso.fr/home/web2/public_html/see.asso.fr/home/web2/public_html/see.asso.fr/index.php?q=sites/www.see.asso.fr/files/advagg_css/css_missing11435336491495298662_0.css">here</a>.</p>
</body></html>
    [protocol] => HTTP/1.1
    [status_message] => Found
    [headers] => Array (
            [Date] => Sat, 20 May 2017 16:44:22 GMT
            [Server] => Apache
            [X-Frame-Options] => SAMEORIGIN
            [X-XSS-Protection] => 1; mode=block
            [Strict-Transport-Security] => max-age=63072000
            [Location] => http://www.see.asso.fr/home/web2/public_html/see.asso.fr/home/web2/public_html/see.asso.fr/home/web2/public_html/see.asso.fr/home/web2/public_html/see.asso.fr/index.php?q=sites/www.see.asso.fr/files/advagg_css/css_missing11435336491495298662_0.css
            [Cache-Control] => max-age=1209600
            [Expires] => Sat, 03 Jun 2017 16:44:22 GMT
            [Vary] => Accept-Encoding
            [Content-Length] => 431
            [Connection] => close
            [Content-Type] => text/html; charset=iso-8859-1
        )
    [redirect_url] => http://www.see.asso.fr/home/web2/public_html/see.asso.fr/index.php?q=sites/www.see.asso.fr/files/advagg_css/css_missing11435336491495298662_0.css
    [code] => 302
    [redirect_code] => 302
    [timer] => Array (
            [count] => 1
            [time] => 24.2
        )
)

The"The document has moved" url looks strange: it appends 3 times the site directory /home/web2/public_html/see.asso.fr/
the location url takes it 4 times

Thanks for help