Thanks for your reply "Denist". 
This is the CMD i have ran and the result;
root@transmission_1:/ # bash /usr/local/etc/openvpn/portforward.sh             
Transmission Port Forward 2017-02-09-13:53:02                                   
sudo: error in /usr/local/etc/sudo.conf, line 0 while loading plugin "sudoers_po
licy"                                                                           
sudo: /usr/local/libexec/sudo/sudoers.so must be only be writable by owner     
sudo: fatal error, unable to load plugins                                       
VPN connection down. Restarting...                                             
Stopping openvpn.                                                               
Waiting for PIDS: 9493.                                                         
Starting openvpn.                                                               
sudo: error in /usr/local/etc/sudo.conf, line 0 while loading plugin "sudoers_po
licy"                                                                           
sudo: /usr/local/libexec/sudo/sudoers.so must be only be writable by owner     
sudo: fatal error, unable to load plugins                                       
Unable to restore VPN connection. Subscription expired? Exiting.               
root@transmission_1:/ #