That log entry [1] is not related to the WiFi panel. I think it's copy/paste something complaining.
[1] WARNING - Got invalid serialized mime data. Ignoring it. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1579825 Title: IP Address not displayed for wifi access points Status in indicator-network package in Ubuntu: New Status in network-manager package in Ubuntu: New Status in ubuntu-system-settings package in Ubuntu: New Bug description: latest rc-proposed build 319 Open system settings expand the connected access point by pressing right arrow expected results: ip address is displayed actual results: ip address is not displayed, just a label "IP Address" with no value To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-network/+bug/1579825/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp