synchronize module take a lot of time

Hello,

when i run my playbook with awx, the synchronize task take a lot of time without any result, how can i overcame this problem ?

Thanks.
Med Amine.

TASK [elasticsearch-common : Create all directories needed for installation] ***
changed: [es_node_1] => (item=/var/run/elasticsearch)
changed: [es_node_1] => (item=/var/log/elasticsearch)

TASK [elasticsearch-common : Install rsync package] ****************************
ok: [es_node_1]

For more details, i share with you the logs of awx_task container :

TASK [elasticsearch-common : Synchronization of src on the control machine to dest on the remote host] ***
2019-04-30 16:07:28,647 DEBUG awx.main.dispatch publish awx.main.tasks.awx_periodic_scheduler(404288b1-577c-4162-9dd9-de065aef03de, queue=awx_private_queue)
[2019-04-30 16:07:28,647: DEBUG/Process-1] publish awx.main.tasks.awx_periodic_scheduler(404288b1-577c-4162-9dd9-de065aef03de, queue=awx_private_queue)
2019-04-30 16:07:28,686 DEBUG awx.main.dispatch delivered 404288b1-577c-4162-9dd9-de065aef03de to worker[179] qsize 0
2019-04-30 16:07:28,693 DEBUG awx.main.dispatch task 404288b1-577c-4162-9dd9-de065aef03de starting awx.main.tasks.awx_periodic_scheduler(*)
2019-04-30 16:07:28,705 DEBUG awx.main.tasks Starting periodic scheduler
2019-04-30 16:07:28,716 DEBUG awx.main.tasks Last scheduler run was: 2019-04-30 16:06:58.702146+00:00
2019-04-30 16:07:28,752 DEBUG awx.main.dispatch task 404288b1-577c-4162-9dd9-de065aef03de is finished
2019-04-30 16:07:39,500 DEBUG awx.main.dispatch publish awx.main.scheduler.tasks.run_task_manager(b960fd13-218d-4430-b4cf-1a04b5a319f5, queue=awx_private_queue)