I had created hotspot using kde-nm-connection-manager in ubuntu 15.10 and was able to connect to it successfully. When I tried to do it in ubuntu 16.04 after upgrading, it says failed to activate connection, under which it reads "(2) Connection 'Hotspot' is not available on the device wlo1 at this time."
I have also tried methods suggested in how to creat wifi hotspot in ubuntu 16.04 since AP-Hotspot is no more working, but they also did not work. Please help.