Creating or browsing bucket doesn't work – Error creating bucket — SyntaxError:

Hello,

I am using latest version of this plugin with WP multisite 4.2.4.
When trying to browse a bucket, I have the following error message :
Error creating bucket — SyntaxError: Unexpected token C

Here is the information provided by the support tab :
site_url(): http://blog.decathlon.com
home_url(): http://blog.decathlon.com
Database Name: test_import
Table Prefix: wp_
WordPress: 4.2.4 Multisite
Web Server: Apache/2.2.15 (CentOS)
PHP: 5.3.3
MySQL: 5.5.42-log
ext/mysqli: no
WP Memory Limit: 64M
Blocked External HTTP Requests: None
WP Locale: fr_FR
Debug Mode: No
WP Max Upload Size: 11 MB
PHP Time Limit: 120
PHP Error Log: /var/log/php_errors.log
fsockopen: Enabled
OpenSSL: OpenSSL 1.0.0-fips 29 Mar 2010
cURL: Enabled
Zlib Compression: Enabled

Media Files: 181 181
Media Files on S3: 0
Number of Image Sizes: 5

Bucket:
Region:
Copy Files to S3: Off
Rewrite File URLs: Off

URL Preview: http://.s3.amazonaws.com/wp‑content/uploads/2015/08/28172030/photo.jpg

Domain: subdomain
Enable Path: On
Custom Path: wp-content/uploads/
Use Year/Month: On
SSL: request
Remove Files From Server: Off
Object Versioning: On
Far Future Expiration Header: Off
Copy HiDPI (@2x) Images: Off

Active Plugins:
WP Offload S3 (v0.9.4) by Delicious Brains
Amazon Web Services (v0.3.1) by Brad Touesnard
Blog Copier (v1.0.7) by Modern Tribe, Inc.
Disable All WordPress Updates (v1.4.7) by Oliver Schlöbe
Embedded Video (v4.1) by Stefan Heß
Google Analytics MU (v2.4) by Foe Services Labs
Hide Admin Bar From Non-admins (v1.0) by Stranger Studios
iframe (v4.2) by webvitaly
Image Widget (v4.1.2) by Modern Tribe, Inc.
Recent Posts Widget Extended (v0.9.9.2) by Satrya
Responsive Lightbox (v1.5.7) by dFactory
simpleSAMLphp for Oxylane with role management (v0.5.1) by David O’Callaghan modified by Tatiana Messiant
TinyMCE Advanced (v4.1.9) by Andrew Ozz
WPMU Plugin Stats (v2.2.0) by Christian Foellmann & Jason Lemahieu
WPMU Theme Usage Info (v2.0.0) by Christian Foellmann & Jason Lemahieu

Thanks

https://ww.wp.xz.cn/plugins/amazon-s3-and-cloudfront/