RamasesN3, I'm thinking your problem is internet connectivity, since each download error occurs 1-2 seconds after the respective file starts downloading, before a website hardly has time to respond. Also, since you mention a work office, I'm wondering if your server computer has a connection to the outside internet?
Regardless, as luacs1998 has posted, "Fixed in latest FE build, we moved away from sqlite anyway". So I don't think that you need the sqlite-jdbc.jar for the server to run.