I successfully installed all component for my own web server. Centos7

when i try to add new plugins and themes getting error message

Error : Plugins list An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the support forums. Try again

SELINUX=enforcing if Changes to *SELINUX=disabled * all are working fine

and i dnt want to disable SELINUX

image kink >> http://s20.pixxxels.org/dn042stwt/Capture.4674567_PNG.png

this way i installed wordpress

adduser demo
passwd demo
gpasswd -a demo wheel

su - demo
sudo yum clean all
sudo yum update -y

sudo yum install httpd mariadb mariadb-server php php-common php-mysql php-gd php-xml php-mbstring php-mcrypt php-xmlrpc unzip wget -y

sudo systemctl start httpd
sudo systemctl start mariadb
sudo systemctl enable httpd
sudo systemctl enable mariadb

sudo mysqlsecureinstallation << Press enter

Set root password? [Y/n] y

New password: <-- yourrootsqlpassword
Re-enter new password: <-- yourrootsqlpassword

Remove anonymous users? [Y/n] y
Disallow root login remotely? [Y/n] y
Remove test database and access to it? [Y/n] y
Reload privilege tables now? [Y/n] y

mysql -u root -p

MariaDB [(none)]>CREATE DATABASE wordpress;
MariaDB [(none)]>GRANT ALL PRIVILEGES on wordpress.* to 'user'@'localhost' identified by 'password';
MariaDB [(none)]>FLUSH PRIVILEGES;
MariaDB [(none)]>exit

wget http://wordpress.org/latest.tar.gz
tar -xzvf latest.tar.gz

sudo cp -avr wordpress/* /var/www/html/
sudo restorecon -r /var/www/html

sudo mkdir /var/www/html/wp-content/uploads
sudo chown -R apache:apache /var/www/html/
sudo chmod -R 755 /var/www/html/

cd /var/www/html/
sudo mv wp-config-sample.php wp-config.php
sudo nano wp-config.php

define('DBNAME', 'wordpress');
define('DBUSER', 'user');
define('DB_PASSWORD', 'password');

sudo firewall-cmd --permanent --zone=public --add-service=http
sudo firewall-cmd --permanent --zone=public --add-service=https
sudo firewall-cmd --reload

please help me to rectify the add new theme plugin error with out disabling SELINUX