Many "WARN : Failed to retrive cached document payloads" on Spotfire server log

Spotfire Server 10.3.2
We have many WARN in the server.log file that have appeared (server.log), and we can't find the issue.

This WARN concerns the webplayer SW100880 :

"WARN 2019-10-29T06:07:15,129+0100 [service-event-handler-1479] wp.service.ServiceEventHandler: Failed to retrieve cached documents payload for with capability WEB_PLAYER, continuing

org.springframework.web.client.HttpClientErrorException$NotFound: 404 Not Found"

Has someone already had this issue ?