Hi Iain, Thanks for your reply. I have tried to restart my app. But still not working. It give same error message. My AWS Server configuration is:
64bit Amazon Linux 2015.09 v2.0.4 running PHP 5.6
DIAGNOSTIC INFO FOR THE PLUGIN
WordPress: 4.3.1
Web Server: Apache
PHP: 5.6.14
MySQL: 5.6.19-log
ext/mysqli: yes
PHP Memory Limit: 256M
WP Memory Limit: 40M
Blocked External HTTP Requests: None
WP Locale: en_US
Debug Mode: No
WP Max Upload Size: 2 MB
PHP Time Limit: 60
PHP Error Log:
WP Cron: Enabled
fsockopen: Enabled
OpenSSL: OpenSSL 1.0.1k-fips 8 Jan 2015
cURL: Enabled
Zlib Compression: Enabled
PHP GD: bundled (2.1.0 compatible)
Imagick: Enabled
