bugfix: gather catch errors when webhook fails

lib/tasks/gather.js

@@ -462,6 +462,7 @@ class TaskGather extends Task {
       return;
     }
 
+    try {
       if (reason.startsWith('dtmf')) {
         if (this.parentTask) this.parentTask.emit('dtmf', evt);
         else {
@@ -483,6 +484,7 @@ class TaskGather extends Task {
           await this.performAction({reason: 'timeout'});
         }
       }
+    } catch (err) {  /*already logged error*/ }
     this.notifyTaskDone();
   }
 }