HANGUP ISSUE

Hello,
I am using vicidial in RATIO mode right now only with one agent.
The call is not hanging up. I tried using both "Hangup Customer" and Hotkeys, the call disposition is set correctly however the channel is not hungup and hence the agent gets another call while the first one is still on in the background.
I have gone through the posts.
I have "o" in the dial string, i have also disabled recording.
I think that it is not getting the right channel to hangup as the logs say "Error" no Channel specified to hangup.
Please help me on this issue.
Regards
I am using vicidial in RATIO mode right now only with one agent.
The call is not hanging up. I tried using both "Hangup Customer" and Hotkeys, the call disposition is set correctly however the channel is not hungup and hence the agent gets another call while the first one is still on in the background.
I have gone through the posts.
I have "o" in the dial string, i have also disabled recording.
I think that it is not getting the right channel to hangup as the logs say "Error" no Channel specified to hangup.
Please help me on this issue.
Regards