Xibo CMS Web Server 1.8.7 proof of play wrong date

Hi,

I Have Xibo Cms Web server. 1.8.7 version and android client. when I get proof of play report, it looks like 1970-01-01. also does not show imaging data after the first day.

this can cause the error

Would be good to update the CMS to current version and confirm on a new layout that it still happens please.