Cannot record ConfBridge, MixMonitor app is not installed

How can I solve this issue? Here is the error message. Asterisk 14.0.2.

app_confbridge.c:716 conf_start_record: Cannot record ConfBridge, MixMonitor app is not installed

Do you have the app_mixmonitor module loaded? If not then you will get the exact message you see.

No, it is not loaded. I will load it in modules.conf under Applications. It is present. Thank you.