How to Fix Proxy 127.0.0.1 Refuses Connection on Kali Linux ?

hi guys , i have this issue when i change my proxy ip to (127.0.0.1) on kali linux. then my iceweasel browser wont connect to the Internet, i get this : The proxy server is refusing connections

Iceweasel is configured to use a proxy server that is refusing connections.

Check the proxy settings to make sure that they are correct.

Contact your network administrator to make sure the proxy server is working.

please any help