human
Solve the following python programming problem given the following code:
def _spawn_radvd(self, radvd_conf) : 
    def callback(pid_file) : 
        radvd_cmd = [RADVD_SERVICE_CMD, '-C', ('%s' % radvd_conf), '-p', ('%s' % pid_file), '-m', 'syslog'] 
        return radvd_cmd 
pm = self._get_radvd_process_manager (callback) 
    pm.enable (reload_cfg = True) 
    self._process_monitor.register (uuid = self._router_id, service_name = RADVD_SERVICE_NAME, monitored_process = self) 
    LOG.debug ('radvd enabled for router %s', self._router_id) 

    
    

    Fix the buggy line: self._process_monitor.register (uuid = self._router_id, service_name = RADVD_SERVICE_NAME, monitored_process = self)
assistant
#Here is Python code to fix the buggy line: self.

self._process_monitor.register (uuid = self._router_id, service_name = RADVD_SERVICE_NAME, monitored_process = pm)